US3495149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutating inductor for use in silicon controlled rectifier power controllers
Assignee: WILLIAM H SWAIN
•
Filing: 1965-05-27
•
Granted: 1970-02-10
•
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 12:47
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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US3262036A
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US3355654A
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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 |