Patent FR501017A successfully refreshed from Google Patents.
FR501017A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Hot air engine
Assignee: HENRI VALENTIN
•
Filing: 1919-06-24
•
Granted: 1920-03-31
•
Expires: 1939-06-24
Abstract
No abstract record available.
Inventors
- 👤 Henri Valentin
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 14:43
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043
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.