US2946252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Progressively keyed electrical musical instrument
Assignee: Individual
•
Filing: 1955-10-31
•
Granted: 1960-07-26
•
Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Melville Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03; G10H3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1218324A
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US1778374A
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US1980292A
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US1998461A
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US1991522A
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GB381210A
Cited
US2164809A
Cited
US2314496A
Cited
US2484914A
Cited
US2586664A
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US2540285A
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US2588680A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |