US PATENT SUBCLASS 73 / 105
.~ Roughness

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

104  DF  SURFACE AND CUTTING EDGE TESTING {1}
105.~ Roughness

DEFINITION

Classification: 73/105

(under subclass 104) Subject matter for testing of surfaces for roughness.

SEE OR SEARCH CLASS

33, Geometrical Instruments, for the measurement of surface contour and depth of valleys.

356, Optics: Measuring and Testing,

445+, for light reflection tests including glass and light diffusion tests.