US3535431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for creating a chorus or celeste effect with an electronic musical instrument
Assignee: Electrohome Ltd
•
Filing: 1968-04-19
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Granted: 1970-10-20
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Expires: 1988-04-19
Abstract
No abstract record available.
Inventors
- 👤 John Szabo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:58
CPC Classifications
H; H03; H03K; H03K6/00; G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/08; G10H1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2905040A
Cited
US3000252A
Cited
US3004460A
Cited
US3007361A
Cited
US3093700A
Cited
US3355539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |