US PATENT SUBCLASS 24 / 112
.~ Spiral fastener

Current as of: June, 1999
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24 /   HD   BUCKLES, BUTTONS, CLASPS, ETC.

90.1  DF  BUTTON WITH FASTENER {26}
112.~ Spiral fastener

DEFINITION

Classification: 24/112

(under subclass 90.1) Devices where the engaging part is a spiral which is screwed into the buttonhole.