US3566319A
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Assignee: Nippon Gakki Co Ltd
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Filing: 1969-04-07
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Granted: 1971-02-23
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Expires: 1989-04-07
Abstract
Abstract A PLURALITY OF PARALLEL ARRANGED TABLETS FOR SELECTIVELY SWITCHING ANY ONE OF THE PAIRS OF CONTACT MEMBERS ARE INDIVIDUALLY MOVABLE IN A VERTICAL DIRECTION. ONE OF THE TABLETS IS DOWNWARDLY MOVED AND MAGNETICALLY INTERLOCKED AT THE INTERMEDIATE POSITION OF THE SPECIFIED RANGE OF ITS MOVEMENT SO AS TO CLOSE THE CORRESPONDING PAIR OF CONTACT MEMBERS, AND IS RELEASED FROM ITS INTERLOCKED STATE BY FURTHER DOWNWARD MOVEMENT OF ANOTHER TABLET OVER THE RINTERMEDIATE POSITION SO AS TO OPENT THE CORRESPONDING PAIR OF CANTACT MEMBERS.
Inventors
- 👤 Junji Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:48
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/20; H01H9/26; G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/055; G10H1/0555; H01H36/00
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |