US2428254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: General Electric Co
•
Filing: 1944-03-21
•
Granted: 1947-09-30
•
Expires: 1964-03-21
Abstract
No abstract record available.
Inventors
- 👤 Ludwig S Walle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:35
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US580628A
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US1507379A
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US760850A
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US900708A
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CH71393A
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US1705700A
Cited
FR820456A
Cited
US2144425A
Cited
US2293487A
Cited
US2337949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |