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发明名称	Packer
摘要
申请公布号	US1777021(A)	申请公布日期	1930.09.30
申请号	US19250003960	申请日期	1925.01.22
申请人	THE GUIBERSON CORPORATION	发明人	STANDLEE HARVEY R.
分类号	E21B33/129	主分类号	E21B33/129
代理机构		代理人
主权项
地址

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