US PATENT SUBCLASS 313 / 597
.~.~.~ Interposed apertured electrode

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

567  DF  WITH GAS OR VAPOR {24}
581  DF  .~ Three or more electrode discharge device {9}
595  DF  .~.~ Internal start or control electrode between discharge electrodes {3}
597.~.~.~ Interposed apertured electrode {2}
598  DF  .~.~.~.~> Mean free-path spacing
599  DF  .~.~.~.~> Plural serial apertured electrodes

DEFINITION

Classification: 313/597

Interposed apertured electrode:

(under subclass 595) Subject matter wherein the start or control electrode has at least one opening there through or formed to make a conduit to permit the passage of the electrical discharge, between the two electrodes.

(1) Note. The control or start electrode can be grid like or in the form of an open cylinder.