US PATENT SUBCLASS 313 / 231.11
.~ Lightning or surge arrester

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

231.01  DF  FLUENT MATERIAL SUPPLY OR FLOW DIRECTING MEANS {3}
231.11.~ Lightning or surge arrester {1}
231.21  DF  .~.~> Expulsion type

DEFINITION

Classification: 313/231.11

Lightning or surge arrester:

(under subclass 231.01) Subject matter including two electrodes designed and positioned to provide an internal series gap to protect an electric apparatus from high transient voltages.