US2964901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lever escapement for timepieces
Assignee: Ebauches SA
•
Filing: 1959-02-03
•
Granted: 1960-12-20
•
Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Beyner Andre
- 👤 Besson Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:21
CPC Classifications
G; G04; G04B; G04B15/00; G04B15/12; G04C; G04C3/00; G04C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2669089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |