US2529097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recording and reproducing system with recorded control signal
Assignee: WA Palmer Films Inc
•
Filing: 1947-01-06
•
Granted: 1950-11-07
•
Expires: 1967-01-06
Abstract
No abstract record available.
Inventors
- 👤 John T Mullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:07
CPC Classifications
G; G11; G11B; G11B3/00; G03; G03B; G03B31/00; G03B31/06; G11B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1834886A
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US1948544A
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US1909765A
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US2096019A
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US2116314A
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US2076937A
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US2308456A
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US2337958A
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US2304856A
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US2364723A
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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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |