US PATENT SUBCLASS 244 / 13
.~ Airplane sustained

Current as of: June, 1999
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244 /   HD   AERONAUTICS

4 R  DF  AIRCRAFT, HEAVIER-THAN-AIR {14}
13.~ Airplane sustained {3}
14  DF  .~.~> Aerial torpedoes
15  DF  .~.~> Fluid propelled
16  DF  .~.~> Glider

DEFINITION

Classification: 244/13

(under subclass 4) Aeronautical machines sustained by aerodynamic action on airfoils in fixed relation to the machines.

(1) Note. For the shape and arrangement of sustaining airfoils with relation to the machine, see this class, subclass 35, and indented subclasses.

(2) Note. For the construction of aircraft of all types, see this class, subclass 117, and indented subclasses.