US PATENT SUBCLASS 219 / 121.28
.~.~.~ Position control

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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
121.11  DF  .~ By arc {16}
121.12  DF  .~.~ Using electron beam {12}
121.28.~.~.~ Position control {2}
121.29  DF  .~.~.~.~> Swept or scanned
121.3  DF  .~.~.~.~> Condition responsive

DEFINITION

Classification: 219/121.28

Position control:

(under subclass 121.12) Subject matter wherein the charged particle beam is located by deflecting the beam or moving the workpiece.