发明名称 Narrow base protective frame
摘要 A narrow base protective frame to allow greater axial adjustment of the rear drive wheels on a tractor to vary the tread width of the wheels. The protective frame provides protection for the operator in event of rollover of the vehicle and has reinforcing structure between upright columns mounted on the rear drive axles.
申请公布号 US4049294(A) 申请公布日期 1977.09.20
申请号 US19750643318 申请日期 1975.12.22
申请人 ALLIS-CHALMERS CORPORATION 发明人 ATHERTON, RALPH R.
分类号 B60R21/13;B62D33/06;(IPC1-7):B62D25/06 主分类号 B60R21/13
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