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Patent US2477146A successfully refreshed from Google Patents.
US2477146A
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US
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Combined recording and reproducing
Assignee: Individual
•
Filing: 1945-03-23
•
Granted: 1949-07-26
•
Expires: 1965-03-23
Abstract
No abstract record available.
Inventors
- 👤 Serge A Scherbatskoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:38
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/08; G11B23/00; G11B23/02; G11B23/04; G11B27/00; G11B27/10; G11B27/11; G11B27/13; Y; Y10; Y10S; Y10S242/00; Y10S242/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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Cited
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US2080812A
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Cited
US2304913A
Cited
US2349018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |