US3042842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic device
Assignee: Cutler Hammer Inc
•
Filing: 1958-04-14
•
Granted: 1962-07-03
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Expires: 1978-04-14
Abstract
No abstract record available.
Inventors
- 👤 Irvin W Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:12
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |