Patent US3400307A successfully refreshed from Google Patents.
US3400307A
Expired / Lapsed
US
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Full wave rectifiers for three phase supply
Assignee: ZF International UK Ltd
•
Filing: 1965-12-21
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Granted: 1968-09-03
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Expires: 1985-12-21
Abstract
No abstract record available.
Inventors
- 👤 Baker Alfred Dickens
- 👤 Hudman Frank Grenville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:46
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H10; H10W; H10W90/00; Y; Y10; Y10S; Y10S257/00; Y10S257/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117020A
Cited
US2345499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |