Patent US-1911-981367

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Original page 1

Sources

  • Patent 981367 document and bibliographic info on espacenet
  • Patent 981367 at google patents big frame; arrays of cones (“conical pockets”); based on the “old and well known principle...by which a hollow cone when thrown point on into the air flies truly and lands easily, being comparatively free from disturbances of minor magnitude in the atmosphere”; throw a switch and change the angle of the cones to act as parachutes on descent; skids below.
  • Original via Espacenet

Inventor location (imputed by HistPat): Washington, DC


Year filed 1909
Year granted 1911
Office US
Patent number 981367
Inventors Frederick Brackett
Inventor country US
Applicant person Frederick Brackett
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Air-craft
English title Air-craft
Tech fields airplane, landing, safety, stability, frame, airfoil, marine, design
Filing date November 17, 1909
Full specification filed date
Application number 19090528561
Grant date January 10, 1911
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 528561
Patent agent
Assigned to
National tech categories USPC 244/139
IPCs
CPCs CPC B64C39/08
Family year 1909
First filing? No
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 4
Number of diagram pages 2
Number of figures 5
Number of claims 18