US PATENT SUBCLASS 73 / 866
TESTING OF MATERIAL
Current as of: June, 1999
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DEFINITION
Classification: 73/866
TESTING OF MATERIAL:
(under the class definition) Subject matter not provided for elsewhere for investigating a substance to determine its properties.
SEE OR SEARCH THIS CLASS, SUBCLASS:
19, for testing a material for its gas content.
23, for gas analysis.
32+, for specific gravity or density determination.
36, for illuminating fluid testing.
53+, for liquid or liquid suspension of solid measuring and testing.
73+, for moisture content or absorption characteristic determining. 78+, for hardness testing.
86, for embrittlement or erosion testing.
87, for ductility or brittleness testing.
104+, for surface and cutting edge testing.
150, for testing of ink, adhesive or plastic coating material.
159+, for stress or strain testing.
169, for flour, dough or bread testing.
760+, for stress or strain testing.
865.5, for determining particle size.
