Patent US3244790A successfully refreshed from Google Patents.
US3244790A
Expired / Lapsed
US
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Percussion circuit utilizing a singlepole key switch
Assignee: ELECTRO MUSIC
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Filing: 1962-08-02
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Granted: 1966-04-05
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Expires: 1982-08-02
Abstract
No abstract record available.
Inventors
- 👤 Paul H Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:18
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A ELECTRICAL MUSICAL INSTRUMENT: AN ELECTRICALLY OPERATED GENERATING DEVICE THAT PRODUCES A SIGNAL CORRESPONDING TO A MUSICAL TONE WITH AN INTENSITY RELATED DIRECTLY TO THE INTENSITY OF ELECTRICAL ENERGIZATION; A TWO STATE KEY SWITCH; MEANS INITIATED ONLY UPON MOVEMENT OF THE SWITCH FROM ONE STATE TO ITS OTHER STATE FOR ENERGIZING SAID GENERATING DEVICE; AND CIRCUITS MEANS DETERMINING A TRANSIENT PERIOD OF ENERGIZATION OF SAID GENERATING DEVICE FROM A FINE IMMEDIATELY FOLLOWING MOVEMENT OF THE SWITCH TO ITS OTHER STATE; SAID CIRCUIT MEANS DETERMINING SAID TRANSIENT PERIOD INDEPENDENTLY OF THE SAID SWITCH REMAINING IN ITS SAID OTHER STATE.
Claim 2
Dependent Claim
99 words
IN A ELECTRICAL MUSICAL INSTRUMENT: AN ELECTRICALLY OPERATED GENERATING DEVICE THAT PRODUCES A SIGNAL CORRESPONDING TO A MUSICAL TONE WITH AN INTENSITY RELATED DIRECTLY TO THE INTENSITY OF ELECTRICAL ENERGIZATION; A TWO STATE KEY SWITCH; MEANS INITIATED ONLY UPON MOVEMENT OF THE SWITCH FROM ONE STATE TO ITS OTHER STATE FOR ENERGIZING SAID GENERATING DEVICE; AND CIRCUITS MEANS DETERMINING A TRANSIENT PERIOD OF ENERGIZATION OF SAID GENERATING DEVICE FROM A FINE IMMEDIATELY FOLLOWING MOVEMENT OF THE SWITCH TO ITS OTHER STATE; SAID CIRCUIT MEANS DETERMINING SAID TRANSIENT PERIOD INDEPENDENTLY OF THE SAID SWITCH REMAINING IN ITS SAID OTHER STATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |