US PATENT SUBCLASS 177 / 63
.~ With additional material-presence responsive means

Current as of: June, 1999
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177 /   HD   WEIGHING SCALES

60  DF  WEIGHER RESPONSIVE MATERIAL CONTROL {13}
63.~ With additional material-presence responsive means {1}
64  DF  .~.~> Controlling feed {2}

DEFINITION

Classification: 177/63

(under subclass 60) Apparatus including additional means responsive to the presence of material, e.g., regulators.