US PATENT SUBCLASS 33 / 30.4
.~.~.~ Harmonic component

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

18.1  DF  SCRIBER {10}
27.01  DF  .~ Curved line {13}
30.1  DF  .~.~ Ellipsograph {7}
30.4.~.~.~ Harmonic component

DEFINITION

Classification: 33/30.4

Harmonic component:

(under subclass 30.1) Subject matter which includes two transverse motion devices connected to the scribing member wherein at least one of the devices is adjustable to vary the length of the minor axis of the ellipse being scribed.