Pebble heater apparatus,申请号US19480045901-传众专利搜索

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发明名称	Pebble heater apparatus
摘要
申请公布号	US2614823(A)	申请公布日期	1952.10.21
申请号	US19480045901	申请日期	1948.08.24
申请人	PHILLIPS PETROLEUM COMPANY	发明人	BERKEMEYER ROBERT
分类号	F28C3/14	主分类号	F28C3/14
代理机构		代理人
主权项
地址

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