Patent US-1913-1054968

From Inventing aviation
Jump to navigation Jump to search

Airplane with two side propellers (behind main sustaining plane) and rear propeller; two pairs of wheels

  • Inventor location (imputed by HistPat): Chicago, IL, Cook county, IL (FIPSloc=17031)

Sources


Year filed 1912
Year granted 1913
Office US
Patent number 1054968
Inventors Frederick A. Helwig
Inventor country US
Applicant person Frederick A. Helwig
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Aeroplane
English title Aeroplane
Tech fields airplane, frame, rudder, navigation, landing, wheels, stability
Filing date 1912-05-29
Full specification filed date
Application number 1912700372
Grant date 1913-03-04
Granted? 1
Publication date
Supplementary to patent
Related to aircraft?
Serial number 700372
Patent agent
Assigned to
National tech categories USPC 244/233
IPCs
CPCs CPC B64C2700/6295
Family year 1912
First filing?
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims