US2748340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excitation system for a variable frequency generator
Assignee: Westinghouse Electric Corp
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Filing: 1952-11-19
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Granted: 1956-05-29
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Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 Harry C Brunner
- 👤 Schuyler L Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:34
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |