Patent US2369809A successfully refreshed from Google Patents.
Patent US2834832A successfully refreshed from Google Patents.
US2834832A
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US
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Film drive apparatus
Assignee: RCA Corp
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Filing: 1953-07-01
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Granted: 1958-05-13
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Frank J Somers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:41
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84; H04N5/843; H04N5/846; H04N3/00; H04N3/36; H04N3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB354170A
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GB657294A
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US2496102A
Cited
US2483149A
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US2499181A
Cited
US2588813A
Cited
DE867051C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |