US3588647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ac power control circuits for reactive power loads
Assignee: Teccor Electronics Inc
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Filing: 1968-04-01
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Granted: 1971-06-28
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Expires: 1988-04-01
Abstract
Abstract AN AC POWER CONTROL CIRCUIT FOR REACTIVE LOADS AND VARIOUS MOTORS INCLUDING A PHASE CONTROL TRIGGER CIRCUIT FOR ACTUATING A POWER CONTROL SWITCH WHEREIN THE TRIGGER CIRCUIT TIMING IMPEDANCE IS VARIED IN ACCORDANCE WITH AN IMPEDANCE VARYING ELEMENT REACTIVE IN A MOTOR FEEDBACK CIRCUIT.
Inventors
- 👤 Jack B Harwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:46
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/45; G05F1/455; H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/14
Claims Analysis
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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 |