US PATENT SUBCLASS 356 / 237.6
.~ Having predetermined light transmission regions (e.g., holes, aperture, multiple material articles)

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

237.1  DF  INSPECTION OF FLAWS OR IMPURITIES {6}
237.6.~ Having predetermined light transmission regions (e.g., holes, aperture, multiple material articles)

DEFINITION

Classification: 356/237.6

Having a predetermined light transmission region (e.g., holes, aperture, multiple material articles):

(under subclass 237.2) Inspection of surface condition wherein the inspected article further comprises a design feature, characteristic, or area permitting the transmission of light.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241.1, for the inspection of the interior of a hole or passage.