US2848920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key contact system for electronic organs
Assignee: Individual
•
Filing: 1955-03-02
•
Granted: 1958-08-26
•
Expires: 1975-03-02
Abstract
No abstract record available.
Inventors
- 👤 John M Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/055; G10H1/0558
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778374A
Cited
US1849724A
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US1899884A
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US2260412A
Cited
US2303516A
Cited
US2470148A
Cited
US2528086A
Cited
US2510608A
Cited
US2694128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |