Patent US2715348A successfully refreshed from Google Patents.
US2715348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic musical instrument
Assignee: Individual
•
Filing: 1951-08-17
•
Granted: 1955-08-16
•
Expires: 1971-08-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred O Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:35
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03; G10H3/06; Y; Y10; Y10S; Y10S200/00; Y10S200/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2572207A
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US659756A
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US1535206A
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US1819820A
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US1998461A
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US1924713A
Cited
US2033232A
Cited
US2475168A
Cited
US2562670A
Cited
US2544466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |