US PATENT SUBCLASS 451 / 31
.~.~ With preparation of shield

Current as of: June, 1999
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451 /   HD   ABRADING

28  DF  ABRADING PROCESS {19}
29  DF  .~ Utilizing shield (mask or stencil) {2}
31.~.~ With preparation of shield

DEFINITION

Classification: 451/31

With preparation of shield:

(under subclass 29) Method including forming or modifying the abradant-resist to define the work area.

(1) Note. Preparation as contemplated herein is not intended to include compounding of materials.

(2) Note. The broad application of a preformed shield to a workpiece is insufficient to define a step of "preparation" for this subclass.