Patent AT-1900-9694

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Year filed 1900
Year granted 1902
Office AT
Patent number 9694
Inventors Emanuel Kalisch
Inventor country HU
Applicant person Emanuel Kalisch
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Doppelschrauben - Propeller für Flugmaschinen
English title Double screws - Propellers for flying machines, likely lift propellers, likely helicopter
Tech fields propellers, lift, propulsion, helicopter
Filing date 1900-06-22
Full specification filed date
Application number
Grant date 1902-06-01
Granted? 1
Publication date 1902-11-10
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories AT Classe 77
Family year
First filing?
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