US2442082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: Individual
•
Filing: 1944-04-13
•
Granted: 1948-05-25
•
Expires: 1964-04-13
Abstract
No abstract record available.
Inventors
- 👤 Louis O French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:14
CPC Classifications
C; C09; C09D; C09D173/00; F; F01; F01L; F01L5/00; F01L5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1867683A
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US1653925A
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US1823399A
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US2076030A
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GB397840A
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US2046003A
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US2048223A
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US2148854A
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US2126376A
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US2367565A
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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) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |