US PATENT SUBCLASS 219 / 109
.~.~.~ With indicator (e.g., recorder)

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}
108  DF  .~.~ Systems of current supply {7}
109.~.~.~ With indicator (e.g., recorder)

DEFINITION

Classification: 219/109

(under subclass 108) Subject matter having indicating means.

(1) Note. The indicator may be, for example, a signal, alarm or recorder.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing, appropriate subclasses for electric testing. Note

76.11+, for electric meters.

340, Communications: Electrical,

655, for a condition responsive system indicating heating circuit energization.