US2642854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stroke cycle engine with supercharging injection pump
Assignee: Individual
•
Filing: 1949-09-09
•
Granted: 1953-06-23
•
Expires: 1969-09-09
Abstract
No abstract record available.
Inventors
- 👤 Elwert Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
F; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1703096A
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DE247745C
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US415446A
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DE170053C
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DE511343C
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US824743A
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US765159A
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FR439909A
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US1200853A
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US1296686A
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US1350260A
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US1853712A
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US2057062A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |