US PATENT SUBCLASS 451 / 79
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Current as of: June, 1999
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DEFINITION
Classification: 451/79
File:
(under subclass 75) Abrading machine specifically designed to perform an abrading operation on a material working file.
(1) Note. Included in this subclass is a patent for cleaning and/or resharpening a file.
SEE OR SEARCH CLASS
76, Metal Tools and Implements, Making,
12+, for file cutting in general.