US PATENT SUBCLASS 315 / 111.91
.~.~ Gas ionization type (e.g., ion pump or gauge source)
Current as of:
June, 1999
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315 /
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ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS
111.01
DF
DISCHARGE DEVICE LOAD WITH FLUENT MATERIAL SUPPLY TO THE DISCHARGE SPACE
{3}
111.81
DF
.~ Electron or ion source {1}
111.91
.~.~ Gas ionization type (e.g., ion pump or gauge source)
DEFINITION
Classification: 315/111.91
Gas ionization type (e.g., ion pump or gauge source):
(under subclass 111.81) Subject matter wherein the fluent material is bombarded by electrons or ions to produce ions.
(1) Note. Included here are ion sources for ion pumps and ionization gauges.
SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices,
359.1+, for ion sources with means to accelerate the ions.
417, Pumps,
49, for ion pumps.