HEAT EXCHANGE UNITS AND HEATING SYSTEMS EMPLOYING SUCH UNITS,申请号USD3621909-传众专利搜索

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发明名称	HEAT EXCHANGE UNITS AND HEATING SYSTEMS EMPLOYING SUCH UNITS
摘要
申请公布号	US3621909(A)	申请公布日期	1971.11.23
申请号	USD3621909	申请日期	1970.08.04
申请人	HORACE L. SMITH JR.	发明人	HORACE L. SMITH JR.
分类号	B30B15/06;F28D9/00;(IPC1-7):F28D7/02	主分类号	B30B15/06
代理机构		代理人
主权项
地址

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