US3566600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric time-piece
Assignee: Panasonic Holdings Corp
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Filing: 1968-06-21
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Granted: 1971-03-02
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Expires: 1988-06-21
Abstract
Abstract AN ELECTRIC TIME-PIECE, WHEREIN A MAGNETIC OR ELECTRIC INDUCTION FIELD OF THE COMMERCIAL OR LINE FREQUENCY WHICH IS LEAKED INTO THE SURROUNDING SPACE IS DETECTED BY COMMERCIAL FREQUENCY DETECTING MEANS, AND A SYNCHRONOUS MOTOR IS DRIVEN IN SYNCHRONISM WITH SIGNALS RESULTING FROM THE DETECTION TO THEREBY DRIVE THE TIME-PIECE MECHANISM CONNECTED WITH THE SYNCHRONOUS MOTOR.
Inventors
- 👤 Koichi Yoshimura
- 👤 Masahiko Shiota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:51
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/16; G04R; G04R40/00; G04R40/02
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |