Patent US2179709A successfully refreshed from Google Patents.
US2179709A
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Internal combustion engine
Assignee: Motors Liquidation Co
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Filing: 1938-09-12
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Granted: 1939-11-14
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Expires: 1958-09-12
Abstract
No abstract record available.
Inventors
- 👤 August F Brecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0002; F02F7/0007; F02B; F02B69/00; F02F7/0021; F02F7/0031; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1812; F02B2275/00; F02B2275/34; F02B3/00; F02B3/06; Y; Y10; Y10S; Y10S123/00; Y10S123/01
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) | 1942-11-13 | 1943-05-15 | 1943-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-13 | 1947-05-15 | 1947-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-13 | 1951-05-15 | 1951-11-14 | $7700.00 | Window Closed / Lapsed |