US3535969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Musical instrument electronic tone processing system
Assignee: Baldwin Piano and Organ Co
•
Filing: 1968-08-09
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Granted: 1970-10-27
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Expires: 1988-08-09
Abstract
No abstract record available.
Inventors
- 👤 David A Bunger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:13
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; Y; Y10; Y10S; Y10S84/00; Y10S84/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |