US2886669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic control device
Assignee: Cutler Hammer Inc
•
Filing: 1956-12-24
•
Granted: 1959-05-12
•
Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Kelto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H50/22; H01H50/30; H01H50/305; H01H11/00; H01H11/04; H01H11/06; H01H50/34; H01H50/44; H01H50/46; H01H50/64; H01H50/641
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2036295A
Cited
US1563670A
Cited
US2087895A
Cited
US2378162A
Cited
US2513695A
Cited
US2692314A
Cited
US2721963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |