US2431045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of winding coils
Assignee: Westinghouse Electric Corp
•
Filing: 1943-10-20
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Granted: 1947-11-18
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Expires: 1963-10-20
Abstract
No abstract record available.
Inventors
- 👤 John L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:57
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/098; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US133994A
Cited
US174117A
Cited
US500279A
Cited
GB190820307A
Cited
US1704067A
Cited
US1837294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |