US2813951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Cutler Hammer Inc
•
Filing: 1953-10-16
•
Granted: 1957-11-19
•
Expires: 1973-10-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Kolb
- 👤 Theodore F Rosing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/20; H01H71/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB455204A
Cited
US2166545A
Cited
US2343264A
Cited
US2418537A
Cited
US2657289A
Cited
US2611055A
Cited
US2660642A
Cited
US2703350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |