US PATENT SUBCLASS 33 / 671
.~.~.~ For marking center of a hole
Current as of:
June, 1999
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GEOMETRICAL INSTRUMENTS
501
DF
GAUGE
{61}
666
DF
.~ With point marker {7}
670
DF
.~.~ Having marker centering means {4}
671
.~.~.~ For marking center of a hole
DEFINITION
Classification: 33/671
For marking center of hole:
(under subclass 670) Subject matter with means to center the marker or its guide within a hole.
(1) Note. Subject matter of this subclass type may include a template with a hole to establish a point on an object or the center of a hole in an object.