DIFF Subgroup
G01J 5/28 using photoemissive or photovoltaic cells
Introduced: September 1968
Full Title
Radiation pyrometry, e.g. infrared or optical thermometry > using electric radiation detectors > using photoemissive or photovoltaic cells
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
Child Classifications
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