US2756330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical tone source for musical instruments
Assignee: CG Conn Ltd
•
Filing: 1950-10-07
•
Granted: 1956-07-24
•
Expires: 1970-10-07
Abstract
No abstract record available.
Inventors
- 👤 Serge L Krauss
- 👤 Charles J Tennes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:22
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2324525A
Cited
US2481608A
Cited
USRE20831E
Cited
GB207266A
Cited
US1877317A
Cited
US2313071A
Cited
US2027044A
Cited
US2340002A
Cited
US2391386A
Cited
US2491244A
Cited
US2496224A
Cited
US2547759A
Cited
US2485538A
Cited
US2555040A
Cited
US2545469A
Cited
US2664501A
Cited
US2580424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |