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US3213348A
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US
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Alternating-current supply system
Assignee: North American Aviation Corp
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Filing: 1960-12-30
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Granted: 1965-10-19
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert W Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:36
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2623203A
Cited
US2912634A
Cited
US2916687A
Cited
US2953735A
Cited
US3052833A
Cited
US3037158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |