Patent US2676023A successfully refreshed from Google Patents.
US2676023A
Expired / Lapsed
US
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Sound recording camera
Assignee: RCA Corp
•
Filing: 1949-10-29
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Granted: 1954-04-20
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Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Warren R Isom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:26
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920789A
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US2154589A
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US2242574A
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US2273024A
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US2419682A
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US2479868A
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US2585913A
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US2480162A
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US2479869A
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US2485839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |