Patent FR-1891-217128.2

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Year filed
Year granted 1891
Office FR
Patent number 217128.2
Inventors Backman
Inventor country FR
Applicant person
Applicant firm
Applicant type
Applicant is inventor? Yes
Original title cert d'add. au brevet pris, le 1 octobre 1891, pour un gouvernail gyroscopic
English title “cert of addition to the patent taken, 1 Oct 1891, for a gyroscopic rudder” info from tome 12
Tech fields Navigation
Filing date
Full specification filed date
Application number
Grant date October 31, 1892
Granted? Yes
Publication date
Supplementary to patent Patent FR-1891-217128
Related to aircraft? Yes
Serial number
Patent agent Engelfred
Assigned to
National tech categories FR 6.3
IPCs
CPCs
Family year 1891
First filing? No
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims