Patent US3255294A successfully refreshed from Google Patents.
US3255294A
Expired / Lapsed
US
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Percussion circuit for electronic musical instrument
Assignee: Thomas International Corp
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Filing: 1961-06-07
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Granted: 1966-06-07
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Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 Heytow Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:38
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN AN ELECTRONIC MUSICAL INSTRUMENT, A GREAT KEYBOARD CIRCUIT A SWELL KEYBOARD CIRCUIT HAVING A PULSE OUTPUT SIGNAL, A MULTIVIBRATOR NORMALLY CONNECTED FOR SINGLE SHOT OPERATION, FIRST SWITCH MEANS FOR ALTERNATIVELY CONNECTING THE PULSE OUTPUT OF SWELL KEYBOARD CIRCUIT TO THE INPUT OF SAID MULTIVIBRATOR OR CONNECTING SAID MULTIVIBRATOR FOR FREE RUNNING OPERATION, A PLURALITY OF SIGNAL GENERATING MEANS FOR GENERATING ELECTRICAL TONE SIGNALS, THE OUTPUTS OF SAID SIGNAL GENERATING MEANS BEING FED TO SAID GREAT AND SWELL KEYBOARD CIRCUIT, GREAT AND SWELL VOICING NETWORKS CONNECTED TO RESPECTIVELY RECEIVE THE OUTPUTS OF SAID GREAT AND SWELL KEYBOARD CIRCUIT, A MODULATION FOR APPLYING A PERCUSSIVE MODULATING ENVELOPE TO TONE SIGNALS DELIVERED BY SAID VOICING NETWORKS, CIRCUIT
Claim 2
Dependent Claim
115 words
IN AN ELECTRONIC MUSICAL INSTRUMENT, A GREAT KEYBOARD CIRCUIT A SWELL KEYBOARD CIRCUIT HAVING A PULSE OUTPUT SIGNAL, A MULTIVIBRATOR NORMALLY CONNECTED FOR SINGLE SHOT OPERATION, FIRST SWITCH MEANS FOR ALTERNATIVELY CONNECTING THE PULSE OUTPUT OF SWELL KEYBOARD CIRCUIT TO THE INPUT OF SAID MULTIVIBRATOR OR CONNECTING SAID MULTIVIBRATOR FOR FREE RUNNING OPERATION, A PLURALITY OF SIGNAL GENERATING MEANS FOR GENERATING ELECTRICAL TONE SIGNALS, THE OUTPUTS OF SAID SIGNAL GENERATING MEANS BEING FED TO SAID GREAT AND SWELL KEYBOARD CIRCUIT, GREAT AND SWELL VOICING NETWORKS CONNECTED TO RESPECTIVELY RECEIVE THE OUTPUTS OF SAID GREAT AND SWELL KEYBOARD CIRCUIT, A MODULATION FOR APPLYING A PERCUSSIVE MODULATING ENVELOPE TO TONE SIGNALS DELIVERED BY SAID VOICING NETWORKS, CIRCUIT
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |