Patent US3493667A successfully refreshed from Google Patents.
US3493667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiautomatic rhythm accompaniment
Assignee: Baldwin Piano and Organ Co
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Filing: 1966-02-17
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Granted: 1970-02-03
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Expires: 1986-02-17
Abstract
No abstract record available.
Inventors
- 👤 Donald J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:53
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/36; G10H1/40; G10H1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN AN ELECTRIC RHYTHM INSTRUMENT FOR PRODUCING A PLAYER CONTROLLED DOWNBEAT AND AN AUTOMATICALLY TIME DELAYED UPBEAT, A PLAYER OPERATED CONTROL MEANS, AN AUDO OUTPUT SYSTEM, CIRCUIT MEANS INTERCONNECTING SAID CONTROL MEANS AND SAID OUTPUT SYSTEM, SAID CIRCUIT MEANS COMPRISING A PULSE GENERATING ELEMENT FOR TRANSMITTING A DOWNBEAT PULSE TO SAID AUDIO OUTPUT SYSTEM IMMEDIATELY UPON OPERATION OF SAID CONTROL MEANS FOLLOWED BY AN AUTOMATICALLY TIME DELAYED UPBEAT PULSE, SAID CIRCUIT MEANS COMPRISING A DELAYED PULSE ELECTRIC GENERATING DEVICE FOR
Claim 2
Dependent Claim
80 words
IN AN ELECTRIC RHYTHM INSTRUMENT FOR PRODUCING A PLAYER CONTROLLED DOWNBEAT AND AN AUTOMATICALLY TIME DELAYED UPBEAT, A PLAYER OPERATED CONTROL MEANS, AN AUDO OUTPUT SYSTEM, CIRCUIT MEANS INTERCONNECTING SAID CONTROL MEANS AND SAID OUTPUT SYSTEM, SAID CIRCUIT MEANS COMPRISING A PULSE GENERATING ELEMENT FOR TRANSMITTING A DOWNBEAT PULSE TO SAID AUDIO OUTPUT SYSTEM IMMEDIATELY UPON OPERATION OF SAID CONTROL MEANS FOLLOWED BY AN AUTOMATICALLY TIME DELAYED UPBEAT PULSE, SAID CIRCUIT MEANS COMPRISING A DELAYED PULSE ELECTRIC GENERATING DEVICE FOR
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |