US PATENT SUBCLASS 252 / 603
.~ For living matter


Current as of: June, 1999
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252 /   HD   COMPOSITIONS

601  DF  FIRE RETARDING {9}
603.~ For living matter


DEFINITION

Classification: 252/603

For living matter:

(under subclass 601) Compositions used to retard the burning of living plant matter, e.g., trees, grass, etc.