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US2641267A
Expired / Lapsed
US
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Method of cleaning internal-combustion engines
Assignee: Individual
•
Filing: 1950-03-30
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Granted: 1953-06-09
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Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 Faulkner Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:13
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307562A
Cited
US1386385A
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US1455574A
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US1483559A
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US1451157A
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US2259656A
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US2259872A
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US2281695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |