Patent US2984140A successfully refreshed from Google Patents.
US2984140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical amplification to woodwind musical instruments
Assignee: Individual
•
Filing: 1958-05-14
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Granted: 1961-05-16
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Expires: 1978-05-14
Abstract
No abstract record available.
Inventors
- 👤 Barron George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:14
CPC Classifications
G; G10; G10D; G10D7/00; G10D9/00; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/16; G10H2230/00; G10H2230/045; G10H2230/155; G10H2230/195; G10H2230/201; G10H2230/205; G10H2230/221; G10H2230/235; G10H2230/241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1527621A
Cited
US2138500A
Cited
US2175325A
Cited
US2198521A
Cited
US2413062A
Cited
US2494390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |