US PATENT SUBCLASS 252 / 604
.~ Material physically quantified

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

601  DF  FIRE RETARDING {9}
604.~ Material physically quantified

DEFINITION

Classification: 252/604

Material physically quantified:

(under subclass 601) Compositions having material defined by dimensions, crystal structure, X-ray difraction, etc.