US2870975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound film reproducer driving system
Assignee: RCA Corp
•
Filing: 1953-02-25
•
Granted: 1959-01-27
•
Expires: 1973-02-25
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Albee
- 👤 James L Pettus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:09
CPC Classifications
G; G03; G03B; G03B31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2354679A
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US2412551A
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US2631855A
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US2560254A
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US2658952A
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US2670906A
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US2657870A
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US2726048A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |