US2679187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronization of separate picture and sound films
Assignee: RCA Corp
•
Filing: 1951-01-16
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Granted: 1954-05-25
•
Expires: 1971-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert C Bitting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:03
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1728986A
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US2116314A
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US2074516A
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US2074517A
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US2208404A
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US2308441A
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US2354583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |