US PATENT SUBCLASS 33 / 339
.~ With cord-type straight-line guide or holder therefor

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

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
339.~ With cord-type straight-line guide or holder therefor

DEFINITION

Classification: 33/339

(under subclass 300) Device having combined therewith a cord, or a cord holder, adapted, when stretched tight, to form a straight line guide member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

353, for the combination of a bubble level and a plumb line, both of which fall within the class definition, wherein the plumb line may also serve as a vertical straight line guide.

392+, for a plumb line which may also serve as a vertical straight line guide.