US PATENT SUBCLASS 33 / 38
.~.~.~.~ 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}
37  DF  .~.~.~ Rotary markers {1}
38.~.~.~.~ Blank space

DEFINITION

Classification: 33/38

(under subclass 37) Devices having means whereby the marking is interrupted during a predetermined interval of travel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39, for other blank space straight line markers.