Patent US2471534A successfully refreshed from Google Patents.
US2471534A
Expired / Lapsed
US
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Musical instrument
Assignee: Individual
•
Filing: 1943-03-29
•
Granted: 1949-05-31
•
Expires: 1963-03-29
Abstract
No abstract record available.
Inventors
- 👤 Muth William
- 👤 Jr John Muth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:22
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03; G10H3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1326955A
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US1665331A
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US1678872A
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US1991727A
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US1941036A
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US2041480A
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US1956350A
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US2178706A
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US2166202A
Cited
US2199948A
Cited
US2224358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |