US2889426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric control device
Assignee: Cutler Hammer Inc
•
Filing: 1956-12-24
•
Granted: 1959-06-02
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Heller
- 👤 Rudolph E Kelto
- 👤 Clarence W Kuhn
- 👤 Theodore F Rosing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:32
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/30; H01H50/305; H01H50/20; H01H50/22; H01H11/00; H01H11/04; H01H11/06; H01H50/34; H01H50/44; H01H50/46; H01H50/64; H01H50/641
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1981534A
Cited
US2139519A
Cited
US2261632A
Cited
US2594396A
Cited
US2513695A
Cited
US2616010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |