US2369090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating oil compositions
Assignee: Gulf Research and Development Co
•
Filing: 1941-12-17
•
Granted: 1945-02-06
•
Expires: 1961-12-17
Abstract
No abstract record available.
Inventors
- 👤 Charles E Trautman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:59
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22; C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2215/00; C10M2215/02; C10M2215/06; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17
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) | 1948-02-06 | 1948-08-07 | 1949-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-06 | 1952-08-07 | 1953-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-06 | 1956-08-07 | 1957-02-06 | $7700.00 | Window Closed / Lapsed |