US2195233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical coil
Assignee: General Electric Co
•
Filing: 1938-07-08
•
Granted: 1940-03-26
•
Expires: 1958-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph V Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:45
CPC Classifications
H; H01; H01F; H01F5/00; H01F5/06; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/122; 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)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-03-26 | 1943-09-25 | 1944-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-26 | 1947-09-25 | 1948-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-26 | 1951-09-25 | 1952-03-26 | $7700.00 | Window Closed / Lapsed |