CPC Subgroup
G01M 3/22 for pipes, cables or tubes; for pipe joints or seals; for valves;
Full Title
Investigating fluid-tightness of structures > by using fluid or vacuum > by detecting the presence of fluid at the leakage point > using special tracer materials, e.g. dye, fluorescent material, radioactive material > for pipes, cables or tubes; for pipe joints or seals; for valves;
6 direct subcodes
Child Classifications
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