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Patent US3048719A successfully refreshed from Google Patents.
US3048719A
Expired / Lapsed
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Electrical duty cycle control
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1959-12-03
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Granted: 1962-08-07
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Expires: 1979-12-03
Abstract
No abstract record available.
Inventors
- 👤 John D Grigsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:22
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/50; A61M2205/00; A61M2205/33; A61M2205/3331; A61M2205/3334
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |