Patent US2581458A successfully refreshed from Google Patents.
US2581458A
Expired / Lapsed
US
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Method and apparatus for operating internal-combustion engines on composite mixturesof diesel fuel oil and gasoline
Assignee: Individual
•
Filing: 1946-01-22
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Granted: 1952-01-08
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Expires: 1966-01-22
Abstract
No abstract record available.
Inventors
- 👤 Leslie D Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:26
CPC Classifications
F; F02; F02B; F02B25/00; F02B2700/00; F02B2700/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1333541A
Cited
US1377139A
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US1753253A
Cited
US1633320A
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US1653825A
Cited
US2122785A
Cited
US2071237A
Cited
US2135925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |