US PATENT SUBCLASS 219 / 61.12
.~.~.~ With cleaning means

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
59.1  DF  .~ Of cylinders (e.g., pipes and tubes) {14}
61.1  DF  .~.~ Having internal support means {3}
61.12.~.~.~ With cleaning means

DEFINITION

Classification: 219/61.12

With cleaning means:

(under subclass 61.1) Subject matter including means to remove excess or undesirable material from the work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

78.14, for work cleaning in bonding with pressure.