US PATENT SUBCLASS 81 / 21
.~ Having work protector surrounding face

Current as of: June, 1999
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81 /   HD   TOOLS

20  DF  HAMMER {6}
21.~ Having work protector surrounding face

DEFINITION

Classification: 81/21

Having work protector surrounding face:

(under subclass 20) Hammer having a member encircling the impacting surface and either protruding axially from it or covering it.

(1) Note. The member functions to prevent damage to a workpiece and is usually flexible or yieldable.