Patent AT-1909-48421

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This patent is substantially the same as Patent GB-1912-25939 and Patent FR-1912-449881, among others. Patent HU-1909-47342 may be the earliest filed. We have found little or nothing in the way of specific international patent references within this grouping. Patent FR-1909-401272 is also closely connected to these developments.

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Patent family descending from Patent AT-1909-48421


Year filed 1909
Year granted 1911
Office AT
Patent number 48421
Inventors Heinrich Mack
Inventor country DE
Inventor location Fürstenberg
Applicant person Heinrich Mack
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Luftschraube
English title Propeller of the variety in which the blades are spiralled along the shaft
Tech fields Propellers, Propulsion, Design, Construction
Filing date 1909-03-08
Full specification filed date
Application number
Grant date 1911-01-01
Granted? 1
Publication date 1911-06-10
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories AT 77d
IPCs
CPCs
Family year 1909
First filing? 0
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 2
Number of diagram pages 1
Number of figures 1
Number of claims 1