Patent US2921476A successfully refreshed from Google Patents.
US2921476A
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Timepiece movement with a jumping second-beating hand
Assignee: DERBY S A
•
Filing: 1958-04-16
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Granted: 1960-01-19
•
Expires: 1978-04-16
Abstract
No abstract record available.
Inventors
- 👤 Vogt Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:19
CPC Classifications
G; G04; G04B; G04B13/00; G04B13/002; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1502; Y10T74/1503; Y10T74/18; Y10T74/18528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US334173A
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US339377A
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CH30092A
Cited
GB109629A
Cited
US1831927A
Cited
US2580597A
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US2591876A
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CH291854A
Cited
US2858719A
Cited
US2838945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |