FR428999A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Propeller for air navigation
Assignee: ZEPHIRIN ERNOULT
•
Filing: 1911-04-27
•
Granted: 1911-09-12
•
Expires: 1931-04-27
Abstract
No abstract record available.
Inventors
- 👤 Zephirin Ernoult
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-09 05:07
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/04
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.