US2150307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
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Filing: 1938-05-21
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Granted: 1939-03-14
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Expires: 1958-05-21
Abstract
No abstract record available.
Inventors
- 👤 Wulsten Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:58
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/52; H01H71/12; H01H71/24; H01H71/2409; H01H71/527; H01H71/58; H01H73/00; H01H73/02; H01H73/18; H01H71/02; H01H2071/0292; H01H3/00; H01H3/02; H01H3/0253; H01H73/04; H01H73/045
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) | 1942-03-13 | 1942-09-12 | 1943-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-13 | 1946-09-12 | 1947-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-13 | 1950-09-12 | 1951-03-14 | $7700.00 | Window Closed / Lapsed |