US2613568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Musical sound generating device
Assignee: Individual
•
Filing: 1948-04-05
•
Granted: 1952-10-14
•
Expires: 1968-04-05
Abstract
No abstract record available.
Inventors
- 👤 Martenot Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:20
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/0091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1216829A
Cited
US1893940A
Cited
US1899884A
Cited
US1913331A
Cited
US2270167A
Cited
US2230836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |