US PATENT SUBCLASS 219 / 121.76
.~.~.~ Multiple beams

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}
121.6  DF  .~.~ Using laser {12}
121.76.~.~.~ Multiple beams {1}
121.77  DF  .~.~.~.~> With sing source

DEFINITION

Classification: 219/121.76

Multiple beams:

(under subclass 121.60) Subject matter having plural coherent light beams.