US2989885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic musical instrument and method
Assignee: Individual
•
Filing: 1955-04-14
•
Granted: 1961-06-27
•
Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Paul A Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:25
CPC Classifications
G; G10; G10H; G10H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1948996A
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US2171936A
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US2199634A
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US2274370A
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US2241027A
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US2528020A
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US2601265A
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US2486208A
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US2568724A
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US2666848A
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US2525156A
Cited
US2662983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |