US PATENT SUBCLASS 171 / 72
.~ With resilient support or drive connection

Current as of: June, 1999
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171 /   HD   UNEARTHING PLANTS OR BURIED OBJECTS

71  DF  PLOW OR BLADE CONTINGUOUS TO VIBRATING SEPARATOR {9}
72.~ With resilient support or drive connection

DEFINITION

Classification: 171/72

(under subclass 71) Apparatus in which the separating surface is either (1) carried, at least in part, by an elastic member or (2) is moved in at least one direction by or through an elastically distortable member.

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9, for other types of drives to unearthing units which are provided with yielding overload relief means.