US PATENT SUBCLASS 244 / 34 A
.~ Annular airfoils

Current as of: June, 1999
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244 /   HD   AERONAUTICS

34 R  DF  AIRCRAFT SUSTENTATION {2}
34 A.~ Annular airfoils

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 244/34

(under the class definition) Subject matter comprising means to provide support, relative to the air, for an aircraft to which it is attached.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, 19, 22, 27, and 70, for paddle wheels which may sustain as well as propel.

11, 22, 28, and 72, for beating wings which may sustain as well as propel.