US3223560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductor controlled rectifier having turn-on and turn-off properties
Assignee: ZF International UK Ltd
•
Filing: 1962-07-23
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Granted: 1965-12-14
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Expires: 1982-07-23
Abstract
No abstract record available.
Inventors
- 👤 Millington David Everitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:47
CPC Classifications
H; H10; H10D; H10D18/00; H10D18/60; H10D62/00; H10D62/10; H10D62/17; H10D99/00; H10P; H10P10/00; H10P14/00; H10P14/40; H10P14/46; H10P50/00; H10P95/00; H10P95/50; Y; Y10; Y10S; Y10S148/00; Y10S148/043; Y10S148/051; Y10S148/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2783197A
Cited
US2689930A
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US2877359A
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US2806983A
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US3099591A
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US3020412A
Cited
US3023347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |