Patent FR-1910-406101

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  • Probably sisters: Hedwig Levin nee Kron and Frida Hurwitz nee Kron
  • Inventor location: DK and DE

Sources


Year filed 1909
Year granted 1909
Office FR
Patent number 406101
Inventors Hedwig Levin, Frida Hurwitz
Inventor country DK, DE
Applicant person Hedwig Levin, Frida Hurwitz
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Enveloppe de ballon tendue par l'air comprimé
English title Balloon shell stretched by way of compressed air
Tech fields LTA, frame
Filing date August 13, 1909
Full specification filed date
Application number 406101D
Grant date November 30, 1909
Granted? Yes
Publication date January 22, 1910
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent Lavoix et Mosès
Assigned to
National tech categories FR 6.4
IPCs IPC B64B1/00
CPCs CPC B64B1/00
Family year 1909
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 19225299
INPADOC family ID 5302377
Number of text pages 2
Number of diagram pages 1
Number of figures 8
Number of claims 1