US PATENT SUBCLASS 219 / 609
.~.~.~.~ Layering (e.g., coating, lining, etc.)

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

600  DF  INDUCTIVE HEATING {7}
602  DF  .~ Metal working {1}
603  DF  .~.~ Bonding {7}
607  DF  .~.~.~ Tube (i.e., pipe) {5}
609.~.~.~.~ Layering (e.g., coating, lining, etc.)

DEFINITION

Classification: 219/609

Layering (e.g., coating, lining, etc.):

(under subclass 607) Subject matter wherein a coating or lining is applied to an interior or exterior surface of a tube wall, or a tube is formed around an object.

(1) Note. A tube may be formed around other objects such as wire, cable, or another tube.

SEE OR SEARCH CLASS

118, Coating Apparatus,

50.1, and 620+ for means applying electrical and/or radiant energy to work and/or coating material.

427, Coating Processes,

543, and 591 for processes with dielectric or induction heating or utilizing radio or microwave energy.