US PATENT SUBCLASS 324 / 122
.~ Gaseous discharge (e.g., spark gap voltmeter)

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

76.11  DF  MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE {46}
122.~ Gaseous discharge (e.g., spark gap voltmeter)

DEFINITION

Classification: 324/122

(under subclass 76) Subject matter having a gaseous discharge device.

(1) Note. A gaseous discharge device is defined as being a device having two spaced electrodes between which electricity flows and having either gas or vapor in the space between the electrodes.

(2) Note. This subclass includes, for example, spark gap volt meters and metering systems using a gaseous discharge device as a nonlinear impedance.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

567+, for gaseous discharge devices, per se.

315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses for miscellaneous gas discharge device systems.