US2533560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion-picture projector having cam operated intermittent film feed and shutter
Assignee: Individual
•
Filing: 1946-12-07
•
Granted: 1950-12-12
•
Expires: 1966-12-07
Abstract
No abstract record available.
Inventors
- 👤 Sr Francis T Coffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:21
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091543A
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US1081548A
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US1268035A
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US1236319A
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US1350374A
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US1573825A
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US1645108A
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US1876845A
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US2030206A
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US2122804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |