Patent FR-1894-205155.2

From Inventing aviation
Jump to navigation Jump to search
Patent FR-1894-205155E.jpg

An airfoil, possibly “flapping”. This is an addition to a previous patent.

Numbering: Our evidence doesn't show this one having its own unique official patent number, so we show it with a suffix ".2". It may be that this addition did have a number, and we will find it someday. Or maybe they didn't assign cert d'additions their own numbers at this stage. Later, they did. We can document the cert d'addition numbering procedures as we work them out.


  • BOPI (1894, tome 14)

Year filed
Year granted 1894
Office FR
Patent number 205155.2
Inventors Clément Ader
Inventor country
Applicant person
Applicant firm
Applicant type
Applicant is inventor? 1
Original title Cert d'addition au brevet pris, le 19 avril 1890, pour appareil ailé pour la navigation aérienne, dite: Avion
English title cert of addition to the patent registered 19 April 1890, for wing apparatus for aerial navigation, called: Avion
Tech fields airfoil, possibly “flapping”
Filing date
Full specification filed date
Application number
Grant date 1894-06-23
Granted? 1
Publication date
Supplementary to patent Patent FR-1890-205155
Related to aircraft? Yes
Serial number
Patent agent Armengaud jeune
Assigned to
National tech categories FR 6.3
Family year 1890
First filing? No
Cites these patents
Citations from after 1930
Application ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims