FR561883A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device intended to increase the efficiency of an active surface moving in a fluid and various applications of this device
Assignee: Pierre Levasseur
•
Filing: 1923-02-07
•
Granted: 1923-10-30
•
Expires: 1943-02-07
Abstract
No abstract record available.
Inventors
- 👤 Pierre Levasseur
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 17:29
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/16
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.