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US2583139A
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Auxiliary contact device for electric contactors
Assignee: Westinghouse Electric Corp
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Filing: 1949-11-01
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Granted: 1952-01-22
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Expires: 1969-11-01
Abstract
No abstract record available.
Inventors
- 👤 Ellis Delbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:27
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/0006; H01H11/0012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2215714A
Cited
US2419072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |