US PATENT SUBCLASS 33 / 39.1
.~.~.~ Blank space

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

18.1  DF  SCRIBER {10}
32.1  DF  .~ Straight-line {7}
34  DF  .~.~ Ink {3}
39.1.~.~.~ Blank space {1}
39.2  DF  .~.~.~.~> Hand pen

DEFINITION

Classification: 33/39.1

Blank space:

(under subclass 34) Subject matter having means whereby the marking is interrupted during a predetermined interval of travel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, for rotary blank space straight line markers.