US PATENT SUBCLASS 250 / 382
.~.~ With means to ionize the gas

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
374  DF  .~ Including a radiant energy responsive gas discharge device {8}
382.~.~ With means to ionize the gas {2}
383  DF  .~.~.~> Emissive fluent type, or with transmissive fluent material
384  DF  .~.~.~> Radioactive

DEFINITION

Classification: 250/382

(under subclass 374) Subject matter including a radioactive material or a source of electromagnetic or particulate radiation which detaches electrons from the molecules of the gas between the electrodes.

(1) Note. The means to ionize the gas may be contained within the gas itself, such as radioactive dust or may be external to it.

(2) Note. Not considered a means to ionize the gas is a material, e.g., comprising the container of the gas, which when irradiated, itself gives off ions or some other radiation which ionizes the gas. The means to ionize the gas in the example would be the means that irradiates the container.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

459+, for electrical testing by ionizing, without irradiation.