Patent DE-1917-311050

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Some figures missing from DPMA scan.

Sources

In keeping with our observations on patent dates we are taking the "Patentiert im Deutschen Reiche vom 6. Dezember 1917 ab." as referring to the day after the filing date of this patent in Germany.


Year filed 1917
Year granted 1918
Office DE
Patent number 311050
Inventors Jakob Kreitmayer
Inventor country DE
Inventor location Munich, München-Neuhausen
Applicant person Jakob Kreitmayer
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Hohle Metall-Luftschraube
English title Hollow metal aircraft propeller
Tech fields metal, propeller
Filing date 1917-12-05
Full specification filed date
Application number
Grant date
Granted? 1
Publication date 1919-02-24
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories DE 77h.6
IPCs IPC B64C11/16, IPC B64C27/46
CPCs CPC B64C11/24
Family year 1917
First filing? 1
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 3
Number of diagram pages
Number of figures 10
Number of claims