US PATENT SUBCLASS 219 / 66
.~.~ Inside electrode

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}
66.~.~ Inside electrode

DEFINITION

Classification: 219/66

(under subclass 59.1) Subject matter having at least one electrode inside the cylinder being bonded.

(1) Note. The inside electrode, for example, may be opposed to an exterior electrode, with the current flow between them traversing the region of the cylinder adjacent the longitudinal seam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64, for this subject matter where the cylinder is a container.