US2542835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic contactor
Assignee: Westinghouse Electric Corp
•
Filing: 1947-09-27
•
Granted: 1951-02-20
•
Expires: 1967-09-27
Abstract
No abstract record available.
Inventors
- 👤 Pierce Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:08
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/36; H01H50/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1278368A
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US1280661A
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US1525697A
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US1692604A
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US2231974A
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US2347528A
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US2374017A
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US2366984A
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US2406216A
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US2397228A
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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) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |