US PATENT SUBCLASS 451 / 551
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Current as of: June, 1999
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451 /   HD   ABRADING

540  DF  RIGID TOOL {4}
548  DF  .~ Rotary disk {3}
551.~.~ Scroll

DEFINITION

Classification: 451/551

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(under subclass 548) Rotary disk abrading tool wherein the working surface is formed with a network of raised curvilinear surfaces.