Patent EP0159654A2 successfully refreshed from Google Patents.
US2140342A
Expired / Lapsed
US
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Distillation process for hydrocarbon oils
Assignee: American Locomotive Co
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Filing: 1934-02-23
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Granted: 1938-12-13
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Expires: 1954-02-23
Abstract
No abstract record available.
Inventors
- 👤 John S Wallis
- 👤 Charles T Chave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:37
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 0
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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) | 1941-12-12 | 1942-06-13 | 1942-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-12 | 1946-06-13 | 1946-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-12 | 1950-06-13 | 1950-12-13 | $7700.00 | Window Closed / Lapsed |