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Patent US2530952A successfully refreshed from Google Patents.
US2530952A
Expired / Lapsed
US
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Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1947-04-16
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Granted: 1950-11-21
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Expires: 1967-04-16
Abstract
No abstract record available.
Inventors
- 👤 Francis J Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:40
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/98; C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; H01H33/88; H01H33/90; H01H33/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2162588A
Cited
US2155263A
Cited
US2134572A
Cited
US2147497A
Cited
US2412858A
Cited
US2445442A
Cited
US2434422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |