US3223833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated dial
Assignee: Electrodynamics Inc
•
Filing: 1964-12-15
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Granted: 1965-12-14
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Expires: 1984-12-15
Abstract
No abstract record available.
Inventors
- 👤 Donald E Protzmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:13
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/54; H01J25/56; G; G04; G04B; G04B19/00; G04B19/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN ILLUMINATABLE DIAL COMPRISING A MEMBER OF LIGHTTRANSMITTING MATERIAL INCLUDING A DISPLAY FIELD FACE PORTION HAVING A PAIR OF OPPOSED SIDE EDGES AND A PERIPHERAL RIM HAVING A LAMP RECEIVING OPENING THEREIN AND A PAIR OF OPPOSED SIDE PORTIONS INTEGRAL WITH SAID EDGES OF SAID FACE, THE EDTES OF THE TWO OPPOSE SIDE PORTIONS OF SAID RIM DEFINING INTERNALLY REFLECTING SURFACES FOR DIRECTING LIGHT FROM SAID OPENING TOWARD THE FACE PORTION OF SAID MEMBER IN A DIRECTION NORMAL TO SAID SIDE EDGES OF
Claim 2
Dependent Claim
83 words
AN ILLUMINATABLE DIAL COMPRISING A MEMBER OF LIGHTTRANSMITTING MATERIAL INCLUDING A DISPLAY FIELD FACE PORTION HAVING A PAIR OF OPPOSED SIDE EDGES AND A PERIPHERAL RIM HAVING A LAMP RECEIVING OPENING THEREIN AND A PAIR OF OPPOSED SIDE PORTIONS INTEGRAL WITH SAID EDGES OF SAID FACE, THE EDTES OF THE TWO OPPOSE SIDE PORTIONS OF SAID RIM DEFINING INTERNALLY REFLECTING SURFACES FOR DIRECTING LIGHT FROM SAID OPENING TOWARD THE FACE PORTION OF SAID MEMBER IN A DIRECTION NORMAL TO SAID SIDE EDGES OF
References Cited (Backward Citations)
US2745946A
Cited
US2831453A
Cited
US3029334A
Cited
US2953668A
Cited
US2965749A
Cited
US3043947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |