US3493669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Output systems for electric guitars and the like
Assignee: Fred W Gretsch Enterprises Ltd
•
Filing: 1965-12-03
•
Granted: 1970-02-03
•
Expires: 1985-12-03
Abstract
No abstract record available.
Inventors
- 👤 Donald W Elbrecht
- 👤 Thomas W Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:36
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/18; G10H3/186; G10H2250/00; G10H2250/471; G10H2250/481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3307050A
Cited
US2194298A
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US2575993A
Cited
US3048792A
Cited
US3087989A
Cited
US3213180A
Cited
US3215767A
Cited
US3340343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |