Patent US1750305A successfully refreshed from Google Patents.
US1750305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating material
Assignee: Westinghouse Electric Corp
•
Filing: 1927-11-19
•
Granted: 1930-03-11
•
Expires: 1947-11-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:50
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/16; H01F1/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1933-03-10 | 1933-09-09 | 1934-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-10 | 1937-09-09 | 1938-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-10 | 1941-09-09 | 1942-03-11 | $7700.00 | Window Closed / Lapsed |