Patent US3240859A successfully refreshed from Google Patents.
US3240859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic tremolo unit
Assignee: Individual
•
Filing: 1962-07-11
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Granted: 1966-03-15
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Expires: 1982-07-11
Abstract
No abstract record available.
Inventors
- 👤 Horace N Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:48
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A TREMOLO CIRCUIT FOR ELECTRICALLY AMPLIFIED MUSICAL INSTRUMENTS COMPRISING A MUSICAL INSTRUMENTS, MEANS SUPPLYING ELECTRICAL SIGNALS CORRESPONDING TO SOUND SIGNALS GENERATED BY SAID INSTRUMENT, SIGNAL AMPLIFYING MEANS ELECTRICALLY CONNECTED WITH SAID SIGNAL MEANS, SELECTIVE DIRECTIONAL IMPEDANCE MEANS CONNECTED ACROSS SAID SIGNAL SUPPLY MEANS SO AS TO NORMALLY RESTRAIN PASSAGE OF SAID SIGNALS THERETHROUGH, SAID IMPEDANCE MEANS BEING VARIABLE IN ITS DEGREE OF DIRECTIONALLY TO VARIABLY REDUCE THE RESTRAINT OF SIGNAL PASSAGE THERETHROUGH, AND ELECTRICAL MEANS FOR CYCLICALLY VARYING THE DEGREE OF DIRECTIONALITY OF SAID VARIABLE IMPEDANCE MEANS AT A TREMOLO FREQUENCY RATE CYCLICALLY ATTENUATE THE SIGNALS SUPPLIED TO SAID AMPLIFYING MEANS AT SAID TREMOLO RATE.
Claim 2
Dependent Claim
105 words
A TREMOLO CIRCUIT FOR ELECTRICALLY AMPLIFIED MUSICAL INSTRUMENTS COMPRISING A MUSICAL INSTRUMENTS, MEANS SUPPLYING ELECTRICAL SIGNALS CORRESPONDING TO SOUND SIGNALS GENERATED BY SAID INSTRUMENT, SIGNAL AMPLIFYING MEANS ELECTRICALLY CONNECTED WITH SAID SIGNAL MEANS, SELECTIVE DIRECTIONAL IMPEDANCE MEANS CONNECTED ACROSS SAID SIGNAL SUPPLY MEANS SO AS TO NORMALLY RESTRAIN PASSAGE OF SAID SIGNALS THERETHROUGH, SAID IMPEDANCE MEANS BEING VARIABLE IN ITS DEGREE OF DIRECTIONALLY TO VARIABLY REDUCE THE RESTRAINT OF SIGNAL PASSAGE THERETHROUGH, AND ELECTRICAL MEANS FOR CYCLICALLY VARYING THE DEGREE OF DIRECTIONALITY OF SAID VARIABLE IMPEDANCE MEANS AT A TREMOLO FREQUENCY RATE CYCLICALLY ATTENUATE THE SIGNALS SUPPLIED TO SAID AMPLIFYING MEANS AT SAID TREMOLO RATE.
References Cited (Backward Citations)
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |