US2464029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making transformers
Assignee: General Electric Co
•
Filing: 1945-04-07
•
Granted: 1949-03-08
•
Expires: 1965-04-07
Abstract
No abstract record available.
Inventors
- 👤 Richard C Ehrman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:01
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/127; H01F27/00; H01F27/28; H01F27/32; H01F27/327; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49073
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1270969A
Cited
US1333004A
Cited
US1497449A
Cited
US1501026A
Cited
US1751971A
Cited
US1826297A
Cited
US2091234A
Cited
US2222729A
Cited
US2195233A
Cited
US2297605A
Cited
GB545820A
Cited
US2243553A
Cited
US2392578A
Cited
US2383857A
Cited
US2328525A
Cited
US2382199A
Cited
US2354500A
Cited
US2382857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |