US PATENT SUBCLASS 219 / 93
.~.~.~.~.~ By localized projection


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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
78.01  DF  .~ For bonding with pressure (e.g., resistance welding) {16}
86.1  DF  .~.~ By spot bonding {12}
91.2  DF  .~.~.~ Methods {4}
92  DF  .~.~.~.~ Current limitation (e.g., by interposed insulation) {2}
93.~.~.~.~.~ By localized projection


DEFINITION

Classification: 219/93

(under subclass 92) Subject matter in which the current localizing means comprises localized projections on the workpiece.