Backstroke swimming trainer,申请号DE19833301738-传众专利搜索

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发明名称	Backstroke swimming trainer
摘要	Published without abstract.
申请公布号	DE3301738(A1)	申请公布日期	1984.07.26
申请号	DE19833301738	申请日期	1983.01.20
申请人	RITTINGHAUS,ROLF,DIPL.-ING.	发明人	RITTINGHAUS,ROLF,DIPL.-ING.
分类号	A63B21/055;A63B69/10;(IPC1-7):63B69/10	主分类号	A63B21/055
代理机构		代理人
主权项
地址

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