US3157247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound producing system
Assignee: Nippon Gakki Co Ltd
•
Filing: 1962-04-25
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Granted: 1964-11-17
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Expires: 1982-04-25
Abstract
No abstract record available.
Inventors
- 👤 Ishimura Kazukiyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:20
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043; G10H1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A SOUND PRODUCING SYSTEM COMPRISING A SOUND REFLECTOR ADAPTED FOR ROTATING ABOUT AN AXIS, AND A PLURALITY OF SPEAKERS ARRANGED AROUND SAID REFLECTOR IN SPACED RELATION AND FACING INWARDLY TOWARDS SAID REFLECTOR IN SPACED RELAFLECTOR INCLUDING A RADIAL ELEMENT EXTENDING FROM SAID AXIS TOWARDS SAID SPEAKERS AND INCLUDING A TERMINAL END WHICH SUCCESSIVELY FACES THE SPEAKERS AS SAID REFLECTOR ROTATES ABOUT SAID AXIS, SAID REFLECTOR BEING A FLAT PLATE AND SAID TERMINAL END HAVING A RECTANGULAR SHAPE.
Claim 2
Dependent Claim
77 words
A SOUND PRODUCING SYSTEM COMPRISING A SOUND REFLECTOR ADAPTED FOR ROTATING ABOUT AN AXIS, AND A PLURALITY OF SPEAKERS ARRANGED AROUND SAID REFLECTOR IN SPACED RELATION AND FACING INWARDLY TOWARDS SAID REFLECTOR IN SPACED RELAFLECTOR INCLUDING A RADIAL ELEMENT EXTENDING FROM SAID AXIS TOWARDS SAID SPEAKERS AND INCLUDING A TERMINAL END WHICH SUCCESSIVELY FACES THE SPEAKERS AS SAID REFLECTOR ROTATES ABOUT SAID AXIS, SAID REFLECTOR BEING A FLAT PLATE AND SAID TERMINAL END HAVING A RECTANGULAR SHAPE.
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |