US PATENT SUBCLASS 134 / 22.11
.~.~ Pipe, tubing, hose, or conduit

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.~.~ Pipe, tubing, hose, or conduit {4}
22.12  DF  .~.~.~> With pressurized fluid or fluid manipulation
22.13  DF  .~.~.~> With inorganic alkaline material treating agent
22.14  DF  .~.~.~> With organic treating agent (e.g., solvent, surfactant, or reactant yielding soluble product, etc.)
22.15  DF  .~.~.~> With steam utilization

DEFINITION

Classification: 134/22.11

Pipe, tubing, hose, or conduit:

(under subclass 22.1) Subject matter wherein the hollow work being treated has the shape of a relatively long and thin cylinder.