US2967989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage power supply
Assignee: North American Aviation Corp
•
Filing: 1956-09-27
•
Granted: 1961-01-10
•
Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 Robert F Eno
- 👤 Charles F Swett
- 👤 Rexford F Goode
- 👤 Paul F Mooney
- 👤 Harry F Eckerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3385; H02M3/3387; H02M3/3388
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2783384A
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US2811643A
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US2798160A
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US2748274A
Cited
US2846581A
Cited
US2774878A
Cited
US2783380A
Cited
US2813976A
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US2883539A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |