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US3839856A Expired / Lapsed US ⏱️ 0.0 years remaining

Solid state watch with calendar display

Assignee: TIME COMPUTER
•
Filing: 1972-01-24
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Granted: 1974-10-08
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Expires: 1992-01-24
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Abstract

Abstract Disclosed is a solid state electronic wristwatch with no moving parts and incorporating a calendar display. The same electrooptical elements are used for the calendar display as are used to display time.

Inventors

  • 👤 B Dargent

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 14:13
CPC Classifications
G; G04; G04G; G04G9/00; G04G9/08; G04G9/10; G04G9/107; G04G9/0017; G04G9/102; G04G9/105

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 111 words
A wristwatch comprising a plurality of electro-optical digital display elements, a time computer coupled to said elements for causing said elements to display time, a date computer coupled to said elements for causing said elements to display calendar information, a manually operated switch coupling said date computer to said display elements for energizing said display elements with calendar information upon operation of said switch, means in said date computer and coupled to said display for resetting the calendar information on said display, said wristwatch including a time read switch in addition to said manually operated switch, said calendar reset means being coupled to said switches and operative in response to them.
Claim 2
Dependent Claim 111 words
A wristwatch comprising a plurality of electro-optical digital display elements, a time computer coupled to said elements for causing said elements to display time, a date computer coupled to said elements for causing said elements to display calendar information, a manually operated switch coupling said date computer to said display elements for energizing said display elements with calendar information upon operation of said switch, means in said date computer and coupled to said display for resetting the calendar information on said display, said wristwatch including a time read switch in addition to said manually operated switch, said calendar reset means being coupled to said switches and operative in response to them.
Claim 3
Dependent Claim 111 words
A wristwatch comprising a plurality of electro-optical digital display elements, a time computer coupled to said elements for causing said elements to display time, a date computer coupled to said elements for causing said elements to disPlay calendar information, a manually operated switch coupling said date computer to said display elements for energizing said display elements with calendar information upon operation of said switch, means in said date computer and coupled to said display for resetting the calendar information on said display, said wristwatch including a time setting switch in addition to said manually operated switch, said calendar reset means being coupled to said switches and operative in response to them.
Claim 4
Dependent Claim 111 words
A wristwatch comprising a plurality of electro-optical digital display elements, a time computer coupled to said elements for causing said elements to display time, a date computer coupled to said elements for causing said elements to disPlay calendar information, a manually operated switch coupling said date computer to said display elements for energizing said display elements with calendar information upon operation of said switch, means in said date computer and coupled to said display for resetting the calendar information on said display, said wristwatch including a time setting switch in addition to said manually operated switch, said calendar reset means being coupled to said switches and operative in response to them.
Claim 5
Dependent Claim 67 words
A wristwatch comprising a frequency standard, a frequency converter coupled to said standard, an electro-optical display, a time computer coupling said frequency converter to said display, a date computer coupling said frequency converter to said display, and switch means coupled to said display for selectively energizing said display from said time and date computers, both said time and date computers including means for strobing said display elements.
Claim 6
Dependent Claim 67 words
A wristwatch comprising a frequency standard, a frequency converter coupled to said standard, an electro-optical display, a time computer coupling said frequency converter to said display, a date computer coupling said frequency converter to said display, and switch means coupled to said display for selectively energizing said display from said time and date computers, both said time and date computers including means for strobing said display elements.
Claim 7
Dependent Claim 25 words
A wristwatch according to claim 3 wherein said time computer includes means for displaying the minutes and seconds of time on the same display elements.
Claim 8
Dependent Claim 63 words
A timepiece of sufficiently small size and power consumption for use as a wristwatch comprising a solid state time computer, a plurality of electro-optical time display elements coupled to said time computer, and a date computer coupled to said display elements whereby said elements may be used as a calendar display, said display elements including means for displaying A.M. and P.M. of time.
Claim 9
Dependent Claim 63 words
A timepiece of sufficiently small size and power consumption for use as a wristwatch comprising a solid state time computer, a plurality of electro-optical time display elements coupled to said time computer, and a date computer coupled to said display elements whereby said elements may be used as a calendar display, said display elements including means for displaying A.M. and P.M. of time.
Claim 10
Dependent Claim 28 words
A timepiece according to claim 5 wherein said means for displaying A.M. and P.M. of time comprise display elements also arranged to display a pair of colon dots.

References Cited (Backward Citations)

US3333410A Cited
US3328954A Cited
US3560998A Cited
US3603073A Cited
US3576099A Cited
US3646751A Cited
US3672155A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-07 1978-04-08 1978-10-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-07 1982-04-08 1982-10-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-07 1986-04-08 1986-10-08 $7700.00 Window Closed / Lapsed

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