US3447413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guitar tone changing device
Assignee: Emmons Guitar Co Inc
•
Filing: 1965-03-18
•
Granted: 1969-06-03
•
Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 Ronald T Lashley
- 👤 Buddie G Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14; G10D3/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2234874A
Cited
US2257995A
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US2573963A
Cited
US2914982A
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US3014395A
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US3163073A
Cited
US3136198A
Cited
US3352188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |