US PATENT SUBCLASS 356 / FOR 100
INSPECTION FOR FLAWS OR IMPERFECTIONS (356/237)

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

FOR 100INSPECTION FOR FLAWS OR IMPERFECTIONS (356/237) {3}
FOR 101  DF  .~> Cloth or thread inspection (356/238)
FOR 102  DF  .~> Passing light through a transparent or translucent article (356/239) {1}
FOR 104  DF  .~> Bore inspection (e.g., borescopes) (356/241)

DEFINITION

Classification: 356/FOR.100

Subject matter for determining differences in the appearance over the surface or over or through internal structure of the material (liquid or solid) forming an article or receptacle contents, by viewing the surface or interior by light reflected from the surface or passing through the interior of the material, such differences representing flaws, cracks, imperfections, foreign substances or dirt.