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US2867971A
Expired / Lapsed
US
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Self-winding mechanism, more especially for wrist watches
Assignee: Friedrich Mauthe GmbH
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Filing: 1954-06-21
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Granted: 1959-01-13
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Hans Dipl Ing Bertsch
- 👤 Stein Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:27
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/18; G; G04; G04B; G04B5/00; G04B5/02; G04B13/00; G04B13/005; G04B13/006; G04B5/18; G04B5/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |