Patent US2369738A successfully refreshed from Google Patents.
US2369738A
Expired / Lapsed
US
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Internal-combustion engine
Assignee: Individual
•
Filing: 1942-09-22
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Granted: 1945-02-20
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Expires: 1962-09-22
Abstract
No abstract record available.
Inventors
- 👤 Laney N Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:49
CPC Classifications
F; F01; F01B; F01B7/00; F01B7/02; F01B7/14; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B75/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-02-20 | 1948-08-21 | 1949-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-20 | 1952-08-21 | 1953-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-20 | 1956-08-21 | 1957-02-20 | $7700.00 | Window Closed / Lapsed |