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Rotary cutter arm

申请公布号:US2706624(A)

申请号:US19540405888

申请日期:1954.01.25

申请公布日期:1955.04.19

申请人:
WESTINGHOUSE AIR BRAKE COMPANY

发明人:BOWMAN SPENCER

分类号:E21C27/22

主分类号:E21C27/22

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