US PATENT SUBCLASS 200 / 279
.~.~.~ Contact making surface (e.g., grooved)

Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

237  DF  ELECTRIC SWITCH DETAILS {5}
238  DF  .~ Contact {17}
275  DF  .~.~ Particular shape or structure of the contact {4}
279.~.~.~ Contact making surface (e.g., grooved)

DEFINITION

Classification: 200/279

(under subclass 275) Subject matter, wherein the contact is characterized by the shape or structure of the contact-making surface (e.g., grooved).