US3588780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indication device for sound producing equipment
Assignee: Victor Company of Japan Ltd
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Filing: 1970-03-25
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Granted: 1971-06-28
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Expires: 1990-03-25
Abstract
Abstract AN INDICATION DEVICE FOR SOUND PRODUCING EQUIPMENT IN WHICH A MEMBER HAVING A CUTOUT IS SECURED TO A STATIONARY PART OF A VARIABLE RESISTOR AND A FORWARD END OF A PLATE SECURED TO A MOVABLE PART OF THE VARIABLE RESISTOR IS INSERTED IN THE CUTOUT OF THE MEMBER SO THAT THE PORTION OF THE PLATE LIES ON THE MEMBER IN SUPERPOSED RELATIONSHIP. BY MOVING THE ROTARY PART, THE AMOUNT OF THE EXPOSED PORTION OF THE PLATE SECURED TO THE MOVABLE PART IS INCREASED OR REDUCED, SO THAT VARIATIONS IN THE VALUE OF RESISTANCE IS INDICATED BY THE AMOUNT OF THE EXPOSED PORTION OF THE PLATE.
Inventors
- 👤 Tetsuro Takimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:47
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |