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Electrical & Energy
Class Information
Number:
250/277CH
Name:
Radiant energy
>
Description:
Sub-classes under this class:
Class Number
Class Name
Patents
250/200
Photocells; circuits and apparatus
87
250/250
Radio and microwave absorption wavemeters
36
250/251
Electrically neutral molecular or atomic beam devices and methods
417
250/252.1
Calibration or standardization methods
889
250/253
Geological testing or irradiation
257
250/271
Coded record and readers; invisible radiant energy type
75
250/281
Ionic separation or analysis
1,396
250/301
Methods of determining oil presence, contamination or concentration
109
250/302
Radiation tracer methods
199
250/304
Methods including separation or nonradiant treatment of test materials
106
250/305
Electron energy analysis
396
250/306
Inspection of solids or liquids by charged particles
1,595
250/315.3
Source with charged plate-type detector
34
250/316.1
With infrared or thermal pattern recording
95
250/324
Corona irradiation
313
250/328
Automatic/serial detection of similar sources
171
250/329
Record projectors
5
250/330
Infrared-to-visible imaging
533
250/335
Cloud or bubble chambers
5
250/336.1
Invisible radiant energy responsive electric signalling
437
250/396R
With charged particle beam deflection or focussing
1,011
250/423R
Ion generation
896
250/428
Fluent material containment, support or transfer means
67
250/453.11
Supported for nonsignalling objects of irradiation (e.g., with conveyor means)
131
250/458.1
Luminophor irradiation
1,224
250/472.1
Invisible radiation responsive nonelectric signalling
127
250/489
Ion collectors
19
250/491.1
Means to align or position an object relative to a source or detector
693
250/492.1
Irradiation of objects or material
1,182
250/493.1
Radiant energy generation and sources
502
250/505.1
Radiation controlling means
538
250/522.1
Source supports
30
250/526
Miscellaneous
33
250/580
Source with recording detector
181
250/900
Optical liquid level sensors
25
250/909
Methods and apparatus ancillary to stimulable phosphor systems
32
250/910
Food sample analysis using invisible radiant energy source
88
250/DIG.1
Passive intrusion detectors
281
250/DIG.2
Radon detection
116
Patents under this class:
Patent Number
Title Of Patent
Date Issued
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