发明授权
US5330287A Grader 失效
平地机

Grader
摘要:
A road surface conditioning machine having an adjustable height shearing blade, side delivery blades, a gauge to indicate the depth of cut of said shearing blade, and an adjustable height striker blade to spread the material cut by the shearing blade and side delivery blades, the leading end of the shearing blade being adjustable in height with respect to the trailing end.
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