US PATENT SUBCLASS 451 / 91
.~.~ Abradant propulsion means

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
75  DF  .~ Sandblast {13}
91.~.~ Abradant propulsion means {5}
92  DF  .~.~.~> Mobile machine
93  DF  .~.~.~> Magnetic
94  DF  .~.~.~> Mechanical {1}
97  DF  .~.~.~> Centrifugal batter
98  DF  .~.~.~> Vane structure

DEFINITION

Classification: 451/91

Abradant propulsion means:

(under subclass 75) Abrading machine including particular means to impel the fluent abrasive material against the workpiece.