US3118274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
katsumi takeda etal
Assignee: —
•
Filing: —
•
Granted: 1964-01-21
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Expires: 1981-01-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:24
CPC Classifications
G; G04; G04C; G04C11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A TIMEKEEPING DEVICE, IN COMBINATION, PHOTOCONDUCTIVE MEANS RESPONSIVE TO BOTH THE SUNRISE AND THE SUNSET, ROTATABLY DRIVEN MEANS CONTROLLED BY SAID PHOTOCONDUCTIVE MEANS AND STARTABLE AT SUNRISE, AN HOUR DIAL MEMBER PROVIDED ON SAID ROTATABLY DRIVEN MEANS FOR ROTATION THEREWITH, MEANS FOR DRIVING SAID ROTATABLY DRIVEN MEANS IN OPERATION AT A PREDETERMINED ANGULAR VELOCITY DURING THE DAYTIME AND AT TWICE SAID PREDETERMINED ANGULAR VELOCITY DURING THE NIGHTTIME AND AN HOUR INDICATING POINTER MEMBER COOPERATIVE WITH SAID HOUR DIAL MEMBER TO INDICATE THE HOUR AT ANY MOMENT AT LEAST IN THE NIGHTTIME.
Claim 2
Dependent Claim
92 words
IN A TIMEKEEPING DEVICE, IN COMBINATION, PHOTOCONDUCTIVE MEANS RESPONSIVE TO BOTH THE SUNRISE AND THE SUNSET, ROTATABLY DRIVEN MEANS CONTROLLED BY SAID PHOTOCONDUCTIVE MEANS AND STARTABLE AT SUNRISE, AN HOUR DIAL MEMBER PROVIDED ON SAID ROTATABLY DRIVEN MEANS FOR ROTATION THEREWITH, MEANS FOR DRIVING SAID ROTATABLY DRIVEN MEANS IN OPERATION AT A PREDETERMINED ANGULAR VELOCITY DURING THE DAYTIME AND AT TWICE SAID PREDETERMINED ANGULAR VELOCITY DURING THE NIGHTTIME AND AN HOUR INDICATING POINTER MEMBER COOPERATIVE WITH SAID HOUR DIAL MEMBER TO INDICATE THE HOUR AT ANY MOMENT AT LEAST IN THE NIGHTTIME.
References Cited (Backward Citations)
US2446450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |