US1408179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion engine
Assignee: Individual
•
Filing: 1919-02-25
•
Granted: 1922-02-28
•
Expires: 1939-02-25
Abstract
No abstract record available.
Inventors
- 👤 Pont Eleuthere Paul Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:08
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M9/00; F01M9/08; F02; F02F; F02F7/00; F02F7/0002; F02F7/0007; F16; F16N; F16N13/00; F16N13/02; Y; Y10; Y10S; Y10S123/00; Y10S123/06
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) | 1925-02-27 | 1925-08-29 | 1926-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-02-27 | 1929-08-29 | 1930-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-02-27 | 1933-08-29 | 1934-02-28 | $7700.00 | Window Closed / Lapsed |