US PATENT SUBCLASS 439 / 683
.~.~.~.~ Adapted to receive base connector of electron tube

Current as of: June, 1999
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439 /   HD   ELECTRICAL CONNECTORS

625  DF  WITH INSULATION OTHER THAN CONDUCTOR SHEATH {10}
626  DF  .~ Plural-contact coupling part {7}
660  DF  .~.~ Plural-contact coupling part comprises receptacle or plug {12}
682  DF  .~.~.~ Receptacle for receiving plug having spaced, longitudinally engaging, prong-like contacts {4}
683.~.~.~.~ Adapted to receive base connector of electron tube {1}
684  DF  .~.~.~.~.~> Receptacle body formed of thin, superposed plates or discs of insulation

DEFINITION

Classification: 439/683

Adapted to receive base connector of electron tube:

(under subclass 682) Receptacle specifically intended to be

coupled to a plug which carries or is intended to carrying an electric space discharge device of the electron-tube type.

(1) Note. The term "electron tube" is interpreted to mean an electronic device in which conduction by electrons takes place through a vacuum or a gaseous medium within a sealed glass or metal container and which has various uses based on the controlled flow of electrons. Various specialized types of, or alternative names for, an electron tube include: an X-ray tube, cathode-ray tube, vacuum tube, theremionic tube, or electrical valve (British terminology).

SEE OR SEARCH THIS CLASS, SUBCLASS:

56+, 168, 182, 220, 280, 356, 360, 375, 414, 419, 541, 558, 602, and 605, for a receptacle adapted to receive the base connector of an electron tube, which receptacle is combined with other features provided for in this class.