US2411209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bit
Assignee: Pure Oil Co
•
Filing: 1944-07-26
•
Granted: 1946-11-19
•
Expires: 1964-07-26
Abstract
No abstract record available.
Inventors
- 👤 Garland W Hall
- 👤 Richard F Sens
- 👤 Matthew A Furth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:13
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/10; F28G3/14; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1952; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/89; Y10T408/909; Y10T408/9095
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) | 1949-11-18 | 1950-05-20 | 1950-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-11-18 | 1954-05-20 | 1954-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-11-18 | 1958-05-20 | 1958-11-19 | $7700.00 | Window Closed / Lapsed |