US3000252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric musical instrument
Assignee: BALDWIN PIANO Co
•
Filing: 1953-10-09
•
Granted: 1961-09-19
•
Expires: 1973-10-09
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:56
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/02; G10H5/08; Y; Y10; Y10S; Y10S84/00; Y10S84/01; Y10S84/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB371641A
Cited
US2159505A
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FR841866A
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US2207450A
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US2498367A
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US2505182A
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US2561349A
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US2547759A
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US2596258A
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US2580217A
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US2645968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |