Patent US3249677A successfully refreshed from Google Patents.
US3249677A
Expired / Lapsed
US
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Pick-ups for guitars and coupling circuits therefor
Assignee: Ormston Burns Ltd
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Filing: 1962-10-19
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Granted: 1966-05-03
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Burns James Ormston
- 👤 Chandler Gordon Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:21
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/18; G10H3/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PICK-UP FOR A GUITAR COMPRISING A MAGNETIC CORE STRUCTURE, A PERMANENT MAGNET IN SAID CORE STRUCTURE, A PLURALITY OF POLE PIECES IN SAID CORE STRUCTURE EQUAL IN NUMBER TO THE NUMBER OF GUITAR STRINGS FROM WHOSE VIBRATION ELECTRIC SIGNALS ARE DESIRED TO BE DERIVED, AND A PLURALITY OF LOW IMPEDANCE COILS HAVING A D.C. RESISTANCE NOT GREATER THAN ABOUT 1 OHM DISPOSED ONE AROUND EACH POLE PIECE.
Claim 2
Dependent Claim
68 words
A PICK-UP FOR A GUITAR COMPRISING A MAGNETIC CORE STRUCTURE, A PERMANENT MAGNET IN SAID CORE STRUCTURE, A PLURALITY OF POLE PIECES IN SAID CORE STRUCTURE EQUAL IN NUMBER TO THE NUMBER OF GUITAR STRINGS FROM WHOSE VIBRATION ELECTRIC SIGNALS ARE DESIRED TO BE DERIVED, AND A PLURALITY OF LOW IMPEDANCE COILS HAVING A D.C. RESISTANCE NOT GREATER THAN ABOUT 1 OHM DISPOSED ONE AROUND EACH POLE PIECE.
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |