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Patent US2646284A successfully refreshed from Google Patents.
US2646284A
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US
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Record adapter and automatic speed changer
Assignee: Individual
•
Filing: 1950-09-23
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Granted: 1953-07-21
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert B Weingarden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:58
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1683469A
Cited
US1885415A
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US1933305A
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US2027426A
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US2113401A
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US2285139A
Cited
US2318654A
Cited
US2353370A
Cited
US2416583A
Cited
US2436529A
Cited
US2526188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |