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US2273299A
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Treatment of hydrocarbons
Assignee: ALBERT C TRAVIS
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Filing: 1938-10-08
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Granted: 1942-02-17
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Expires: 1958-10-08
Abstract
No abstract record available.
Inventors
- 👤 Szayna Antoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/02; C10G29/04; C10G45/00; C10G45/02; C10G45/04; C10G45/24; C10G45/28
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) | 1945-02-16 | 1945-08-18 | 1946-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-16 | 1949-08-18 | 1950-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-16 | 1953-08-18 | 1954-02-17 | $7700.00 | Window Closed / Lapsed |