US PATENT SUBCLASS 33 / 30.5
.~.~.~ Flexible cord type

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


33 /   HD   GEOMETRICAL INSTRUMENTS

18.1  DF  SCRIBER {10}
27.01  DF  .~ Curved line {13}
30.1  DF  .~.~ Ellipsograph {7}
30.5.~.~.~ Flexible cord type

DEFINITION

Classification: 33/30.5

Flexible cord type:

(under subclass 30.1) Subject matter wherein the means for describing a line includes a string having each string end held to a different focus point on the ellipse to be drawn and scribing member contacts the cord when taut at various positions to form points on the ellipse.