US2481213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escapement mechanism
Assignee: Individual
•
Filing: 1944-10-25
•
Granted: 1949-09-06
•
Expires: 1964-10-25
Abstract
No abstract record available.
Inventors
- 👤 Gummersall Thomas Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:45
CPC Classifications
G; G04; G04B; G04B15/00; G04B15/06; G04B15/08; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8892
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE598553C
Cited
GB190501121A
Cited
US1867947A
Cited
US1989604A
Cited
US1895666A
Cited
FR786656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |