US PATENT SUBCLASS 244 / 159
.~ Space station

Current as of: June, 1999
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244 /   HD   AERONAUTICS

158 R  DF  SPACECRAFT {6}
159.~ Space station

DEFINITION

Classification: 244/159

(under subclass 158) Apparatus wherein the machine or structure is orbitally maintained in the upper reaches of or beyond the earth's atmosphere to which other machine or structures may rendezvous and lock and subsequently be launched therefrom.