Patent US3091914A successfully refreshed from Google Patents.
US3091914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balance wheel for an electric watch
Assignee: Hamilton Watch Co
•
Filing: 1961-11-01
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Granted: 1963-06-04
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 James H Reese
- 👤 Peter J Serlemitsos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:35
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AN ELECTRIC WATCH HAVING A BALANCE WHEEL MOUNTED ON A BALANCE STAFF, AND A COIL YIELDABLY MOUNTED ON SAID BALANCE WHEEL BY RESILIENT SUPPORT MEANS ATTACHED TO SAID BALANCE WHEEL AND COIL TO PERMIT RESILIENT YIELDING MOVEMENT OF SAID COIL IN A PLANE PERPENDICULAR TO THE AXIS OF SAID BALANCE STAFF.
Claim 2
Dependent Claim
51 words
AN ELECTRIC WATCH HAVING A BALANCE WHEEL MOUNTED ON A BALANCE STAFF, AND A COIL YIELDABLY MOUNTED ON SAID BALANCE WHEEL BY RESILIENT SUPPORT MEANS ATTACHED TO SAID BALANCE WHEEL AND COIL TO PERMIT RESILIENT YIELDING MOVEMENT OF SAID COIL IN A PLANE PERPENDICULAR TO THE AXIS OF SAID BALANCE STAFF.
References Cited (Backward Citations)
US2952117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |