US2756629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent film advancing mechanism
Assignee: RCA Corp
•
Filing: 1953-05-20
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Granted: 1956-07-31
•
Expires: 1973-05-20
Abstract
No abstract record available.
Inventors
- 👤 Warren R Isom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:07
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/20; G03B1/22; G03B1/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB632363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |