US PATENT SUBCLASS 144 / 28.7
.~.~.~.~ Planetary

Current as of: June, 1999
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144 /   HD   WOODWORKING

2.1  DF  SPECIAL-WORK MACHINE {34}
28.1  DF  .~ Pencil sharpening {3}
28.3  DF  .~.~ Movable tool {4}
28.6  DF  .~.~.~ Rotatable or revolvable {3}
28.7.~.~.~.~ Planetary {1}
28.71  DF  .~.~.~.~.~> Plural tools

DEFINITION

Classification: 144/28.7

Planetary:

(under subclass 28.6) Machine including means to rotate the tool on its own axis and simultaneously to revolve it about another axis through the workpiece so as to maintain it in material-removing contact with the workpiece.