US3437001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key changer and tremolo for guitar
Assignee: ARTHUR A KRAFT
•
Filing: 1966-04-19
•
Granted: 1969-04-08
•
Expires: 1986-04-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:12
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14; G10D3/147; G10D3/153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2654283A
Cited
US3237502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |