Patent US3479813A successfully refreshed from Google Patents.
US3479813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive spring arrangement for watch movement using two barrels
Assignee: Manufacture des Montres Rolex SA
•
Filing: 1967-10-25
•
Granted: 1969-11-25
•
Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 Hans Kocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:13
CPC Classifications
G; G04; G04B; G04B1/00; G04B1/10; G04B1/12; G04B33/00; G04B33/10; G04B5/00; G04B5/02; G04B5/18; G04B5/19
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |