Patent US2487637A successfully refreshed from Google Patents.
US2487637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipole circuit breaker and tripping device therefor
Assignee: Federal Electric Products Co
•
Filing: 1944-08-08
•
Granted: 1949-11-08
•
Expires: 1964-08-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Cole
- 👤 Jr William H Lantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/74; H01H71/7427; H01H71/7445; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2107246A
Cited
US2150013A
Cited
US2240623A
Cited
US2242717A
Cited
US2295577A
Cited
US2419125A
Cited
US2320382A
Cited
US2421830A
Cited
US2365120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |