Excavating – Ditcher
Reexamination Certificate
2011-05-31
2011-05-31
Pezzuto, Robert E (Department: 3671)
Excavating
Ditcher
C037S352000
Reexamination Certificate
active
07950170
ABSTRACT:
In one aspect of the invention, a trenching machine has at least one roller assembly comprising a body rotationally supported by an axle exteriorly mounted to a trenching chain or wheel. At least a portion of the body comprises a substantially conical shape.
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Cannon Neil
Hall David R.
Pezzuto Robert E
Townsend, III Philip W.
Wilde Tyson J.
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