US2789180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit-breakers and parts therefor
Assignee: Cutler Hammer Inc
•
Filing: 1953-09-02
•
Granted: 1957-04-16
•
Expires: 1973-09-02
Abstract
No abstract record available.
Inventors
- 👤 Irvin W Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:53
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/60; H01H77/00; H01H77/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1639888A
Cited
US1781288A
Cited
US1935906A
Cited
US2073286A
Cited
US2191501A
Cited
US2171866A
Cited
US2288517A
Cited
US2338563A
Cited
US2484932A
Cited
US2496332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |