Patent FR1014324A successfully refreshed from Google Patents.
US2568379A
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US
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Assignee: Union Oil Company of California
•
Filing: 1945-11-26
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Granted: 1951-09-18
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Expires: 1965-11-26
Abstract
No abstract record available.
Inventors
- 👤 Clyde H O Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:29
CPC Classifications
G; G05; G05D; G05D9/00; B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01J; B01J8/00; B01J8/08; B01J8/082; B01D2253/00; B01D2253/10; B01D2253/102; B01D2256/00; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/70; B01D2257/702; B01D2257/7022; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D53/04; B01D53/0454
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1115193A
Cited
US1422007A
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DE618502C
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US2360787A
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US2384311A
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US2397566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |