US2797382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic frequency and voltage control for motor generator
Assignee: North American Aviation Corp
•
Filing: 1952-05-02
•
Granted: 1957-06-25
•
Expires: 1972-05-02
Abstract
No abstract record available.
Inventors
- 👤 Hugo H Woerdemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:06
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2021752A
Cited
US2524166A
Cited
US2504489A
Cited
US2724997A
Cited
US2607028A
Cited
US2641738A
Cited
US2692366A
Cited
US2675518A
Cited
US2629853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |