US PATENT SUBCLASS 409 / 237
.~.~ Including counterbalancing means

Current as of: June, 1999
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409 /   HD   GEAR CUTTING, MILLING, OR PLANING

64  DF  MILLING {29}
235  DF  .~ Machine frame {5}
237.~.~ Including counterbalancing means

DEFINITION

Classification: 409/237

Including counterbalancing means:

(under subclass 235) Apparatus including means to counteract and lift against the weight of a portion of the apparatus, to cause movable structure to function as if lighter in weight.