US PATENT SUBCLASS 174 / 187
.~.~ Ventilating

Current as of: June, 1999
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174 /   HD   ELECTRICITY: CONDUCTORS AND INSULATORS

137 R  DF  INSULATORS {17}
176  DF  .~ With terminal elements {5}
187.~.~ Ventilating

DEFINITION

Classification: 174/187

(under subclass 176) Insulators in which a terminal element is constructed or arranged to permit ventilation of a chamber or space formed in the insulating body.

(1) Note. Compare this class, subclass 16.