US PATENT SUBCLASS 168 / 39
.~.~.~ Button head

Current as of: June, 1999
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168 /   HD   FARRIERY

29  DF  CALKS {2}
31  DF  .~ Removable {8}
*  DD  .~.~ Tenoned {5}
39.~.~.~ Button head

DEFINITION

Classification: 168/39

Calk and shoe connected by means of a tenon having a button-head which enters a socket and is then turned on its axis to lock it in place.