Patent US3011379A successfully refreshed from Google Patents.
US3011379A
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Electronic musical instrument with photoelectric switching
Assignee: BALDWIN PIANO Co
•
Filing: 1957-02-05
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Granted: 1961-12-05
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Expires: 1977-02-05
Abstract
No abstract record available.
Inventors
- 👤 Merton D Corwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:38
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/18; H05K1/182; H05K1/184; G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/055; G10H1/0553; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0388; H05K2201/0397; H05K3/00; H05K3/30; H05K3/301; H05K3/32; H05K3/325; H05K3/326; Y; Y10; Y10S; Y10S84/00; Y10S84/19
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |