US PATENT SUBCLASS 451 / 50
.~.~ Ball abrading

Current as of: June, 1999
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451 /   HD   ABRADING

28  DF  ABRADING PROCESS {19}
49  DF  .~ Roll, roller, shaft, ball, or piston abrading {1}
50.~.~ Ball abrading

DEFINITION

Classification: 451/50

Ball abrading:

(under subclass 49) Abrading process specifically directed to forming a spherical shaped workpiece by abrading (or polishing).

SEE OR SEARCH CLASS

29, Metal Working,

888.04+, 895.3+, 898.068, 898.069, and 899+, for a metal working process involving more than mere grinding for making a ball bearing or other ball.