US3467852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed controlled switching circuit
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1967-01-26
•
Granted: 1969-09-16
•
Expires: 1987-01-26
Abstract
No abstract record available.
Inventors
- 👤 James E Murray
- 👤 Robert G Klimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:09
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/5381
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2809303A
Cited
US3119058A
Cited
US3219906A
Cited
US3248640A
Cited
US3265953A
Cited
US3351840A
Cited
US3350661A
Cited
US3361952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |