US2957367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed drive for turntable of record players
Assignee: Individual
•
Filing: 1957-07-25
•
Granted: 1960-10-25
•
Expires: 1977-07-25
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth M Mentzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:32
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/275; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084; Y10T74/19219; Y10T74/1956; Y10T74/19565; Y10T74/1957; Y10T74/19623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1067144A
Cited
US1448189A
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US1788445A
Cited
US1951875A
Cited
US2029094A
Cited
US2114911A
Cited
US2184032A
Cited
US2097071A
Cited
US2203292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |