Patent US-1909-935130

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Wings powered by motor; "forward and upward" motion, adjustable.

  • Inventor location: Westend, Germany
  • Witnesses at conclusion of printed text: Henry Hasper, Woldemar Haupt
  • Witnesses on diagram pages: M. G. Crandall, J. J. McCarthy

Sources


Year filed 1909
Year granted 1909
Office US
Patent number 935130
Inventors Robert Strehlau
Inventor country DE
Inventor location
Applicant person Robert Strehlau
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Lifting and driving propeller
English title Lifting and driving propeller
Tech fields propulsion, navigation, flapping, marine
Filing date 1909/04/21
Full specification filed date
Application number 1909491394
Grant date 1909/09/28
Granted? Yes
Publication date
Supplementary to patent Patent DE-1907-217533
Related to aircraft? 1
Serial number 491394
Patent agent Foster, Freeman, Watson & Coit
Assigned to
National tech categories USPC 244/22
IPCs IPC B64C33/00
CPCs CPC B64C33/02
Family year 1907
First filing? 0
Cites these patents
Citations from after 1930
Application ID 47228917
INPADOC family ID 43890831
Number of text pages 3
Number of diagram pages 2
Number of figures 8
Number of claims 10