US3375320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accordion keyboard controlled accompanimental tone generator
Assignee: GEORGE J CARRAS
•
Filing: 1965-02-23
•
Granted: 1968-03-26
•
Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 George J Carras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:43
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/32; Y; Y10; Y10S; Y10S84/00; Y10S84/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563477A
Cited
US2254284A
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US2710555A
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US2764051A
Cited
US2779225A
Cited
US2784633A
Cited
US2792738A
Cited
US2971421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |