Patent US3376493A successfully refreshed from Google Patents.
US3376493A
Expired / Lapsed
US
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Inverter circuit having improved control frequency compensating means for producing a regulated a.c. output
Assignee: Basic Products Corp
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Filing: 1963-09-16
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Granted: 1968-04-02
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Donald A Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:32
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/517
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097335A
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US3061769A
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US3273076A
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US3264548A
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US3273046A
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US3176242A
Cited
US3075136A
Cited
US3189845A
Cited
US3259827A
Cited
US3248634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |