Patent US3028114A successfully refreshed from Google Patents.
Patent US2440680A successfully refreshed from Google Patents.
US2440680A
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Method of and apparatus for oil purification
Assignee: YOUNGSTOWN MILLER Co
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Filing: 1944-07-29
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Granted: 1948-05-04
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Expires: 1964-07-29
Abstract
No abstract record available.
Inventors
- 👤 Fernand L Gerin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:19
CPC Classifications
C; C10; C10M; C10M175/00; C11; C11B; C11B3/00; C11B3/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |