Patent US4051981A successfully refreshed from Google Patents.
Patent US2467261A successfully refreshed from Google Patents.
US2467261A
Expired / Lapsed
US
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Phonograph turntable drive
Assignee: DANFORTH RADIO Co Ltd
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Filing: 1945-11-19
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Granted: 1949-04-12
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Expires: 1965-11-19
Abstract
No abstract record available.
Inventors
- 👤 Gilbert L Hobrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:08
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265; H; H04; H04M; H04M1/00; H04M1/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |