US3288908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker system utilizing rotatable speakers and an acoustic shield for tremolo and vibrato
Assignee: MUSICCO LLC
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Filing: 1963-11-18
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Granted: 1966-11-29
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Markowitz Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:09
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043; G10H1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
APPARATUS COMPRISING A SOURCE OF ELECTRICAL FREQUENCY SIGNAL WITHIN THE AUDIO RANGE, AN ACOUSTIC TRANSDUCER FOR TRANSDUCING ELECTRICAL SIGNALS INTO AUDIO SIGNALS, CONNECTING MEANS CONNECTING SAID SOURCE TO SAID TRANSDUCER TO TRANSMIT HIGH FREQUENCY ELECTRICAL SIGNALS WITHIN THE AUDIO RANGE TO SAID TRANSDUCER, AN ACOUSTIC SHIELD SPACED ADJACENT SAID TRANSDUCER, MOTIVE POWER MEANS FOR
Claim 2
Dependent Claim
54 words
APPARATUS COMPRISING A SOURCE OF ELECTRICAL FREQUENCY SIGNAL WITHIN THE AUDIO RANGE, AN ACOUSTIC TRANSDUCER FOR TRANSDUCING ELECTRICAL SIGNALS INTO AUDIO SIGNALS, CONNECTING MEANS CONNECTING SAID SOURCE TO SAID TRANSDUCER TO TRANSMIT HIGH FREQUENCY ELECTRICAL SIGNALS WITHIN THE AUDIO RANGE TO SAID TRANSDUCER, AN ACOUSTIC SHIELD SPACED ADJACENT SAID TRANSDUCER, MOTIVE POWER MEANS FOR
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |