US PATENT SUBCLASS 37 / 357
.~.~.~.~ With distinct rotary digger
Current as of:
June, 1999
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37 /
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EXCAVATING
347
DF
DITCHER
{8}
352
DF
.~ Having endless digger {1}
353
DF
.~.~ Endless bucket {2}
355
DF
.~.~.~ Longitudinal cut {7}
357
.~.~.~.~ With distinct rotary digger
DEFINITION
Classification: 37/357
With distinct rotary digger:
(under subclass 355) Apparatus combined with a supplementary excavating mechanism (e.g., a rotary cutting disc, a rotary cutting knife, a rotary cutting pick) operating in unison with the chain to widen the trench dug by the excavator.