Patent FR24091E successfully refreshed from Google Patents.
FR24091E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
4-stroke internal combustion engine with 2 opposing moving pistons
Assignee: MARCEL MARIE JOSEPH EUGENE COU
•
Filing: 1920-09-30
•
Granted: 1922-02-21
•
Expires: 1940-09-30
Abstract
No abstract record available.
Inventors
- 👤 Roger-Joseph Amaudric Chaffaut
- 👤 Marcel-Marie-Joseph Coupier
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 05:10
CPC Classifications
F; F01; F01B; F01B7/00; F01B7/02; F01B7/14; F02; F02B; F02B75/00; F02B75/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.