Patent US3901876A successfully refreshed from Google Patents.
Patent US2230642A successfully refreshed from Google Patents.
US2230642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil
Assignee: Standard Oil Development Co
•
Filing: 1938-08-13
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Granted: 1941-02-04
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Expires: 1958-08-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert G M Fischer
- 👤 Stewart H Hulse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:11
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/188; C10L1/1881; C10L1/1886; C10L1/20; C10L1/205
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) | 1944-02-04 | 1944-08-05 | 1945-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-04 | 1948-08-05 | 1949-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-04 | 1952-08-05 | 1953-02-04 | $7700.00 | Window Closed / Lapsed |