Patent US3786626A successfully refreshed from Google Patents.
US3786626A
Expired / Lapsed
US
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Digital watch
Assignee: Agon Uhrenfabrik Robert Triebold AG
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Filing: 1973-04-05
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Granted: 1974-01-22
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Expires: 1993-04-05
Abstract
Abstract A digital watch in which the numerals move beneath windows of a cover plate and possessing a reflecting element for reading the time in a direction which is at least approximately parallel to the cover plate.
Inventors
- 👤 Z Hurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:24
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/20; G04B19/202; G04B39/00; G04B39/008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A digital wrist watch comprising a cover plate with windows beneath which move past the numerals of the watch, and a reflecting element for reading the time in a direction at least approximately parallel to the cover plate.
Claim 2
Dependent Claim
38 words
A digital wrist watch comprising a cover plate with windows beneath which move past the numerals of the watch, and a reflecting element for reading the time in a direction at least approximately parallel to the cover plate.
Claim 3
Dependent Claim
48 words
The watch as defined in claim 1, further including a protective cover means arranged over the numerals and at least pervious to light at one side, said protective cover means incorporating a planar, reflecting inner surface visible from the outside and inclined with respect to the cover plate.
Claim 4
Dependent Claim
25 words
The watch as defined in claim 1, wherein the reflecting element comprises an optical inverting prism having a surface bearing directly upon the cover plate.
Claim 5
Dependent Claim
24 words
The watch as defined in claim 3, wherein said inverting prism is constructed such that it simultaneously hermetically seals the watch towards the outside.
Claim 6
Dependent Claim
32 words
The watch as defined in claim 3, wherein said inverting prism includes a surface which is visible from the outside, and at least a part of said surface having a metallic coating.
Claim 7
Dependent Claim
18 words
The watch as defined in claim 3, further including a cover hood member for protecting the inverting prism.
References Cited (Backward Citations)
US2430616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |