US3564573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning device for stringed musical instruments
Assignee: Individual
•
Filing: 1969-08-07
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Granted: 1971-02-16
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Expires: 1989-08-07
Abstract
Abstract A TUNING DEVICE FOR A STRINGED MUSICAL INSTRUMENT IN WHICH A SELECTED ONE OF THE STRINGS OF THE INSTRUMENT CAN BE GRADUALLY AND ACCURATELY TUNED BY CONTINUOUSLY BIASING A SPINDLE INTO ROTATION-TRANSMITTING PLAY-FREE ENGAGEMENT WITH A WORM GEAR WHICH IN TURN IS SECURED TO A ROTARY SHAFT HAVING ATTACHED THEREON THE STRING TO BE TUNED.
Inventors
- 👤 Hans Wustl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:13
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |