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
IPCs
CPCs
Family year
First filing?
Number of citations
Cited by
Application ID
INPADOC family ID
Number of text pages 2
Number of diagram pages 1
Number of figures 4
Number of claims 2


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