Patent US2326031A successfully refreshed from Google Patents.
US2326031A
Expired / Lapsed
US
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Protective device for electrical apparatus and systems
Assignee: Westinghouse Electric Corp
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Filing: 1942-05-20
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Granted: 1943-08-03
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Expires: 1962-05-20
Abstract
No abstract record available.
Inventors
- 👤 John K Hodnette
- 👤 Merrill G Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:43
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/38; H01H85/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-08-02 | 1947-02-01 | 1947-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-08-02 | 1951-02-01 | 1951-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-08-02 | 1955-02-01 | 1955-08-03 | $7700.00 | Window Closed / Lapsed |