Patent US1929661A successfully refreshed from Google Patents.
US3199020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage control device
Assignee: McGraw Edison Co
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Filing: 1961-07-05
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Granted: 1965-08-03
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Expires: 1981-07-05
Abstract
No abstract record available.
Inventors
- 👤 Hilker Annamary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:53
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A VOLTAGE CONTROL DEVICE COMPRISING A FIRST CIRCUIT INCLUDING A FIRST VARIABLE IMPEDANCE DEVICE, A SECOND CIRCUIT COUPLED ACROSS SAID FIRST CIRCUIT AND INCLUDING A SECOND VARIABLE IMPEDANCE DEVICE, MEANS FOR CONNECTING A SOURCE OF VOLTAGE IN SAID SECOND CIRCUIT TO PROVIDE A VOLTAGE ACROSS SAID FIRST CIRCUIT, MEANS FOR SELECTIVELY REVERSING THE PHASE OF SAID VOLTAGE, AND MEANS FOR VARYING THE IMPEDANCE VALUES OF SAID IMPEDANCE DEVICES TO VARY THE MAGNITUDE OF SAID VOLTAGE.
Claim 2
Dependent Claim
75 words
A VOLTAGE CONTROL DEVICE COMPRISING A FIRST CIRCUIT INCLUDING A FIRST VARIABLE IMPEDANCE DEVICE, A SECOND CIRCUIT COUPLED ACROSS SAID FIRST CIRCUIT AND INCLUDING A SECOND VARIABLE IMPEDANCE DEVICE, MEANS FOR CONNECTING A SOURCE OF VOLTAGE IN SAID SECOND CIRCUIT TO PROVIDE A VOLTAGE ACROSS SAID FIRST CIRCUIT, MEANS FOR SELECTIVELY REVERSING THE PHASE OF SAID VOLTAGE, AND MEANS FOR VARYING THE IMPEDANCE VALUES OF SAID IMPEDANCE DEVICES TO VARY THE MAGNITUDE OF SAID VOLTAGE.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |