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.


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
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
Family year 1909
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 1
Number of claims 1