Patent US2545989A successfully refreshed from Google Patents.
US2545989A
Expired / Lapsed
US
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Electronic control
Assignee: Westinghouse Electric Corp
•
Filing: 1945-09-07
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Granted: 1951-03-20
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Expires: 1965-09-07
Abstract
No abstract record available.
Inventors
- 👤 Stephen L Burgwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:31
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/26; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1251377A
Cited
US1725709A
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US1928812A
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US1966077A
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US1910202A
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US2011395A
Cited
US2113220A
Cited
US2282998A
Cited
US2421632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |