Patent US3169232A successfully refreshed from Google Patents.
US3169232A
Expired / Lapsed
US
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Controlled rectifier circuit
Assignee: CRYDOM LAB Inc
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Filing: 1960-06-03
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Granted: 1965-02-09
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Expires: 1980-06-03
Abstract
No abstract record available.
Inventors
- 👤 Robert G Engman
- 👤 Howard W Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/125; H02M3/135; H02M3/137
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |