US PATENT SUBCLASS 134 / 22.13
.~.~.~ With inorganic alkaline material treating agent

Current as of: June, 1999
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134 /   HD   CLEANING AND LIQUID CONTACT WITH SOLIDS

*  DD  PROCESSES {23}
22.1  DF  .~ Hollow work, internal surface treatment {7}
22.11  DF  .~.~ Pipe, tubing, hose, or conduit {4}
22.13.~.~.~ With inorganic alkaline material treating agent

DEFINITION

Classification: 134/22.13

With inorganic alkaline material treating agent:

(under subclass 22.11) Subject matter wherein the fluid treating agent comprises an nonorganic basic material.