US PATENT SUBCLASS 172 / 437
WITH TOOL SHARPENER

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

437WITH TOOL SHARPENER

DEFINITION

Classification: 172/437

(under the class definition) Apparatus comprising means for sharpening an earth working element.

SEE OR SEARCH CLASS

56, Harvesters,

250, for cutting reels with sharpening means.

76, Metal Tools and Implements, Making,

82+, especially subclass 85 for tool sharpeners or tool sharpener attachments, per se.

451, Abrading, 415+, for an abrading attachment, per se.