Patent US3325580A successfully refreshed from Google Patents.
US3325580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Musical instrument utilizing piezoelectric transducer
Assignee: Individual
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Filing: 1966-08-08
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Granted: 1967-06-13
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Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Lester M Barcus
- 👤 John F Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/18; G10H3/185; G10H2220/00; G10H2220/461; G10H2220/465; G10H2220/475; G10H2220/501; G10H2220/525; G10H2220/541; G10H2220/545; G10H2220/551; Y; Y10; Y10S; Y10S84/00; Y10S84/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A STRINGED INSTRUMENT COMPRISING: MEANS INCLUDING A BODY; A PAIR OF PIEZOELECTRIC MEMBERS PROVIDING AN ALTERNATING VOLTAGE OUTPUT WHEN PRESSURE VARIATIONS ARE APPLIED THERETO; AND A STRING BRIDGE MOUNTED TO SAID BODY AND INCLUDING A PAIR OF OPPOSITELY DISPOSED OPENINGS WITHIN WHICH SAID PIEZOELECTRIC MEMBERS ARE WEDGE WHEREBY SAID BRIDGE DEVELOPS A CONTINUOUS COMPRESSIVE FORCE UPON EACH OF SAID PIEZOELECTRIC MEMBERS, AND WHEREBY VIBRATIONS OF SAID STRING BRIDGE CONTINUOUSLY ALTER THE MAGNITUDE OF SAID COMPRESSIVE FORCE TO EFFECT AN ALTERNATING VOLTAGE OUTPUT OF SAID PIEZOELECTRIC MEMBERS CORRESPONDING TO THE CHARACTER OF SAID VIBRATIONS.
Claim 2
Dependent Claim
93 words
A STRINGED INSTRUMENT COMPRISING: MEANS INCLUDING A BODY; A PAIR OF PIEZOELECTRIC MEMBERS PROVIDING AN ALTERNATING VOLTAGE OUTPUT WHEN PRESSURE VARIATIONS ARE APPLIED THERETO; AND A STRING BRIDGE MOUNTED TO SAID BODY AND INCLUDING A PAIR OF OPPOSITELY DISPOSED OPENINGS WITHIN WHICH SAID PIEZOELECTRIC MEMBERS ARE WEDGE WHEREBY SAID BRIDGE DEVELOPS A CONTINUOUS COMPRESSIVE FORCE UPON EACH OF SAID PIEZOELECTRIC MEMBERS, AND WHEREBY VIBRATIONS OF SAID STRING BRIDGE CONTINUOUSLY ALTER THE MAGNITUDE OF SAID COMPRESSIVE FORCE TO EFFECT AN ALTERNATING VOLTAGE OUTPUT OF SAID PIEZOELECTRIC MEMBERS CORRESPONDING TO THE CHARACTER OF SAID VIBRATIONS.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |