Patent US439586A successfully refreshed from Google Patents.
US2936748A
Expired / Lapsed
US
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Lubrication for two-stroke cycle engines
Assignee: Individual
•
Filing: 1955-09-02
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Granted: 1960-05-17
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Expires: 1975-09-02
Abstract
No abstract record available.
Inventors
- 👤 Jensen Jens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:58
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/02; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190422059A
Cited
US821915A
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US904132A
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FR396881A
Cited
US1131296A
Cited
GB191310667A
Cited
US1606424A
Cited
US2172147A
Cited
US2333524A
Cited
US2682259A
Cited
DE856978C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |