US PATENT SUBCLASS 244 / 113
.~ Aerodynamic retarders

Current as of: June, 1999
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244 /   HD   AERONAUTICS

110 R  DF  RETARDING AND RESTRAINING DEVICES {11}
113.~ Aerodynamic retarders

DEFINITION

Classification: 244/113

(under subclass 110) Devices for retarding the progress of aircraft through the air.