Patent US2760033A successfully refreshed from Google Patents.
US2760033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1952-11-19
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Granted: 1956-08-21
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Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 John B Macneill
- 👤 Fritz E Florschutz
- 👤 Carl G Lentjes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:10
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1740558A
Cited
US1761724A
Cited
US2012409A
Cited
DE648635C
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US2252983A
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GB510473A
Cited
GB522369A
Cited
GB611388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |