Patent US301250A successfully refreshed from Google Patents.
US2809840A
Expired / Lapsed
US
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Record lowering and releasing means for automatic interlocking and conventional record players
Assignee: Individual
•
Filing: 1952-11-03
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Granted: 1957-10-15
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Expires: 1972-11-03
Abstract
No abstract record available.
Inventors
- 👤 Herman H Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:27
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/08; G11B17/12; G11B17/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1390404A
Cited
GB377173A
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US2604325A
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US2512701A
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US2620194A
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US2555910A
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US2544230A
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US2622885A
Cited
US2626157A
Cited
US2682412A
Cited
US2579175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |