US2648124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing electromagnets
Assignee: Individual
•
Filing: 1948-08-06
•
Granted: 1953-08-11
•
Expires: 1968-08-06
Abstract
No abstract record available.
Inventors
- 👤 Duyck Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:28
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/49073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1485289A
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US1775981A
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US1902491A
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US1956826A
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US2148398A
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US2213093A
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US2224254A
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US2285233A
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US2388598A
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US2462393A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |