US PATENT SUBCLASS 30 / 159
.~.~.~ Spring-opened

Current as of: June, 1999
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30 /   HD   CUTLERY

151  DF  SHEATHED {6}
155  DF  .~ Pivoted blade {3}
158  DF  .~.~ With blade-opening means {2}
159.~.~.~ Spring-opened

DEFINITION

Classification: 30/159

(under subclass 158) Implements in which a spring is provided for projecting the blade from its sheath or handle.