US3476223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnet
Assignee: Motor Wheel Corp
•
Filing: 1968-01-17
•
Granted: 1969-11-04
•
Expires: 1988-01-17
Abstract
No abstract record available.
Inventors
- 👤 Harold C Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:44
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; F; F16; F16D; F16D65/00; F16D65/14; F16D2121/00; F16D2121/18; F16D2121/20; F16D2127/00; F16D2127/02; F16D2127/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3224944A
Cited
US3298473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |