Nonkicking brake apparatus,申请号US19260122339-传众专利搜索

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发明名称	Nonkicking brake apparatus
摘要
申请公布号	US1812091(A)	申请公布日期	1931.06.30
申请号	US19260122339	申请日期	1926.07.14
申请人	STANDARD OIL COMPANY	发明人	GATES LEROY G.
分类号	E21B19/00	主分类号	E21B19/00
代理机构		代理人
主权项
地址

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