US PATENT SUBCLASS 172 / 747
.~ Specific material

Current as of: June, 1999
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172 /   HD   EARTH WORKING

681  DF  TOOL, STANDARD OR CONNECTION {32}
747.~ Specific material

DEFINITION

Classification: 172/747

(under subclass 681) Apparatus in which a claim includes a recitation of the material of which the implement or a part thereof is made.

(1) Note. A mere recitation that a tool is made of iron or steel is excluded from this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

519, for a rolling tool having a yieldable material rim (e.g., rubber).

612, for a fabric or flexible tool.