US2442199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1943-12-15
•
Granted: 1948-05-25
•
Expires: 1963-12-15
Abstract
No abstract record available.
Inventors
- 👤 Robert C Dickinson
- 👤 Russell E Frink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:23
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1811451A
Cited
US1713229A
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US1912342A
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US2147419A
Cited
US2242905A
Cited
US2293513A
Cited
US2276859A
Cited
US2353729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |