Patent AT-1913-68090

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Patent AT-1913-68090 diagram page

It would be of interest if this Albert Hirth is the same as that we have only as the father of Hellmuth Hirth, who worked very extensively on propellers.


Year filed 1913
Year granted 1914
Office AT
Patent number 68090
Inventors Albert Hirth
Inventor country DE
Applicant person Albert Hirth‎
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Propeller mit verstellbaren Flügeln
English title Propeller with adjustable blades
Tech fields Propellers, Airplane
Filing date 1913/11/27
Full specification filed date
Application number
Grant date 1914/08/01
Granted? 1
Publication date 1915/03/10
Supplementary to patent Patent DE-1912-12-23-Albert Hirth
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories AT 77d
Family year 1912
First filing? 0
Cites these patents
Citations from after 1930
Application ID
Number of text pages 2
Number of diagram pages 1
Number of figures 4
Number of claims 2