Patent US3495149A successfully refreshed from Google Patents.
US3495149A
Expired / Lapsed
US
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Commutating inductor for use in silicon controlled rectifier power controllers
Assignee: WILLIAM H SWAIN
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Filing: 1965-05-27
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Granted: 1970-02-10
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Expires: 1985-05-27
Abstract
No abstract record available.
Inventors
- 👤 William H Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:44
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/32; H02M1/06; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3103616A
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US3278827A
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US3336520A
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US3364413A
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US3334290A
Cited
US3355654A
Cited
US3341765A
Cited
US3378751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |