Moving stair roller,申请号US19360094803-传众专利搜索

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发明名称	Moving stair roller
摘要
申请公布号	US2145343(A)	申请公布日期	1939.01.31
申请号	US19360094803	申请日期	1936.08.07
申请人	THE WESTINGHOUSE AIR BRAKE COMPANY	发明人	DEMPSEY PHILIP W.
分类号	B66B23/14	主分类号	B66B23/14
代理机构		代理人
主权项
地址

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