US3408449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keying and wave-shaping circuit for electronic musical instrument
Assignee: Rodgers Organ Co
•
Filing: 1965-04-05
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Granted: 1968-10-29
•
Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Tinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:49
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; Y; Y10; Y10S; Y10S84/00; Y10S84/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2403664A
Cited
US2483823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |