FR55074E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to engine pistons
Assignee: Edgard-Jacques Bourquin
•
Filing: 1946-10-28
•
Granted: 1951-06-06
•
Expires: 1966-10-28
Abstract
No abstract record available.
Inventors
- 👤 Edgard-Jacques Bourquin
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-07 19:27
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0043; F02F7/0046; B; B23; B23P; B23P19/00; B23P19/04; B23P19/042; F16; F16J; F16J1/00; F16J1/02
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.