US PATENT SUBCLASS 112 / 69
.~.~ Thrum mechanism

Current as of: June, 1999
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112 /   HD   SEWING

2  DF  SPECIAL MACHINES {38}
65  DF  .~ Buttonhole {5}
69.~.~ Thrum mechanism

DEFINITION

Classification: 112/69

Includes means for stitching the thrums or loose ends of thread after the buttonhole proper is made.