US PATENT SUBCLASS 501 / 111
.~.~.~ And phosphorus compound


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
94  DF  .~ Refractory {8}
108  DF  .~.~ Magnesium compound containing {7}
111.~.~.~ And phosphorus compound


DEFINITION

Classification: 501/111

And phosphorus compound:

(under subclass 108) Subject matter additionally comprising a compound of phosphorus.