US2927790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film-advancing mechanisms
Assignee: Kelvin Hughes Ltd
•
Filing: 1957-02-27
•
Granted: 1960-03-08
•
Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Tyler Frank
- 👤 Dowding Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:47
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1228255A
Cited
US929743A
Cited
GB211419A
Cited
US2034543A
Cited
US2622957A
Cited
US2751815A
Cited
US2782701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |