US PATENT SUBCLASS 194 / 341
.~.~ By spring counterbalance

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194 /   HD   CHECK-ACTUATED CONTROL MECHANISMS

302  DF  INCLUDING MEANS TO TEST VALIDITY OF CHECK {4}
339  DF  .~ Having means to test weight {2}
341.~.~ By spring counterbalance

DEFINITION

Classification: 194/341

By spring counterbalance:

(under subclass 339) Apparatus wherein the testing means includes a member adapted to exert a force opposed to the check's weight, wherein the opposing force is exerted by a spring.