US2943305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuitry for rectifiers
Assignee: General Electric Co
•
Filing: 1957-04-08
•
Granted: 1960-06-28
•
Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Charles S Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:33
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/125; H02H7/1257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733399A
Cited
US1959513A
Cited
US2259331A
Cited
US2315599A
Cited
US2457069A
Cited
US2698429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |