US2630739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film handling mechanism for viewing apparatus
Assignee: Bell and Howell Co
•
Filing: 1949-11-16
•
Granted: 1953-03-10
•
Expires: 1969-11-16
Abstract
No abstract record available.
Inventors
- 👤 Edward E Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:28
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2332810A
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US1494801A
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US1424457A
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CH178826A
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US2065993A
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US2172256A
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US2226618A
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US2279463A
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US2493998A
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US2517414A
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US2432704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |