US PATENT SUBCLASS 244 / 133
.~.~ Materials of construction

Current as of: June, 1999
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244 /   HD   AERONAUTICS

117 R  DF  AIRCRAFT STRUCTURE {14}
129.1  DF  .~ Details {8}
133.~.~ Materials of construction

DEFINITION

Classification: 244/133

(under subclass 129.1) Miscellaneous materials peculiarly adapted to aircraft construction or incorporated with other aircraft structure.