US2502591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnet
Assignee: General Controls Co
•
Filing: 1948-07-12
•
Granted: 1950-04-04
•
Expires: 1968-07-12
Abstract
No abstract record available.
Inventors
- 👤 Ray William Alton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:41
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18; F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/20; F23N2235/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1700228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |