Patent US2319129A successfully refreshed from Google Patents.
US1685488A
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Process and apparatus for converting hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1923-02-19
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Granted: 1928-09-25
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Expires: 1943-02-19
Abstract
No abstract record available.
Inventors
- 👤 Lyman C Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:16
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; 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) | 1931-09-25 | 1932-03-26 | 1932-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-25 | 1936-03-26 | 1936-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-25 | 1940-03-26 | 1940-09-25 | $7700.00 | Window Closed / Lapsed |