Patent US1793135A successfully refreshed from Google Patents.
US1793135A
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Refined viscous hydrocarbon oil
Assignee: Standard Oil Co
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Filing: 1928-11-07
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Granted: 1931-02-17
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Expires: 1948-11-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:09
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/10; C10M2207/14; C10M2207/142; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10N; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17
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) | 1934-02-16 | 1934-08-18 | 1935-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-02-16 | 1938-08-18 | 1939-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-02-16 | 1942-08-18 | 1943-02-17 | $7700.00 | Window Closed / Lapsed |