US PATENT SUBCLASS 106 / 276
.~.~ Rock asphalt

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
273.1  DF  .~ Bituminous material or tarry residue {10}
276.~.~ Rock asphalt

DEFINITION

Classification: 106/276

(under subclass 273) Compositions in the preparation of which rock asphalt is employed.