US PATENT SUBCLASS 33 / 284
.~.~ Including distance finding feature
Current as of:
June, 1999
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33 /
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GEOMETRICAL INSTRUMENTS
227
DF
STRAIGHT-LINE LIGHT RAY TYPE
{20}
282
DF
.~ Vertical angle {2}
284
.~.~ Including distance finding feature
DEFINITION
Classification: 33/284
(under subclass 282) Device including means for determining the distance from the instrument.