Air and water control mechanism,申请号US19400344224-传众专利搜索

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发明名称	Air and water control mechanism
摘要
申请公布号	US2300932(A)	申请公布日期	1942.11.03
申请号	US19400344224	申请日期	1940.07.06
申请人	CHICAGO PNEUMATIC TOOL COMPANY	发明人	KATTERJOHN AUGUST H.
分类号	E21B21/01	主分类号	E21B21/01
代理机构		代理人
主权项
地址

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