US PATENT SUBCLASS 225 / 29
.~.~ With changeable blade-edge contour

Current as of: June, 1999
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225 /   HD   SEVERING BY TEARING OR BREAKING

6  DF  SEVERING BY MANUALLY FORCING AGAINST FIXED EDGE {26}
27  DF  .~ With means to hold pad or stack of individual sheets {3}
29.~.~ With changeable blade-edge contour {1}
30  DF  .~.~.~> Slidable notcher

DEFINITION

Classification: 225/29

(under subclass 27) Devices in which the configuration of the severing edge of the blade may be varied by rearrangement of relatively movable parts thereof.