US PATENT SUBCLASS 81 / 25
.~ Having replaceable striking face

Current as of: June, 1999
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20  DF  HAMMER {6}
25.~ Having replaceable striking face

DEFINITION

Classification: 81/25

Having replaceable striking face:

(under subclass 20) Hammer wherein the impacting surface is on a member which can be removed from the head, and a substitute installed.