Patent US4435094A successfully refreshed from Google Patents.
Patent US3273439A successfully refreshed from Google Patents.
US3273439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device which accommodates removable frets on any fretted stringed instrument
Assignee: Individual
•
Filing: 1965-08-05
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Granted: 1966-09-20
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Expires: 1985-08-05
Abstract
No abstract record available.
Inventors
- 👤 Chester P Keefe
- 👤 John C Navilliat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:13
CPC Classifications
G; G10; G10D; G10D1/00; G10D1/04; G10D1/05; G10D1/08; G10D3/00; G10D3/06; G10D3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN A STRINGED INSTRUMENTS HAVING AN ELONGATED FINGERBOARD OF ONE MATERIAL WITH STRINGS EXTENDING LENGTHWISE THEREOF, SAID FINGERBOARD HAVING PORTIONS OF A DIFFERENT MATERIAL PROVIDING GROOVES EXTENDING LATERALLY OF THE EXTENT OF SAID STRINGS AND FRETS REMOVABLY MOUNTED AND FRICTIONALLY HELD IN SAID GROOVES, SAID DIFFERENT MATERIAL PROVIDING
Claim 2
Dependent Claim
48 words
IN A STRINGED INSTRUMENTS HAVING AN ELONGATED FINGERBOARD OF ONE MATERIAL WITH STRINGS EXTENDING LENGTHWISE THEREOF, SAID FINGERBOARD HAVING PORTIONS OF A DIFFERENT MATERIAL PROVIDING GROOVES EXTENDING LATERALLY OF THE EXTENT OF SAID STRINGS AND FRETS REMOVABLY MOUNTED AND FRICTIONALLY HELD IN SAID GROOVES, SAID DIFFERENT MATERIAL PROVIDING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |