US PATENT SUBCLASS 156 / 357
.~.~.~ By presence or absence of work to which applied

Current as of: June, 1999
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156 /   HD   ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE

349  DF  SURFACE BONDING MEANS AND/OR ASSEMBLY MEANS THEREFOR {34}
350  DF  .~ Automatic and/or material-triggered control {9}
356  DF  .~.~ Of application of fluent material to work {1}
357.~.~.~ By presence or absence of work to which applied

DEFINITION

Classification: 156/357

(under subclass 356) Apparatus in which the means applying the flowable or gaseous material is controlled by means detecting or sensing the presence or absence of the work to which the material is to be applied.