Planche à dessin,申请号FRD843653-传众专利搜索

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发明名称	Planche à dessin
摘要
申请公布号	FR843653(A)	申请公布日期	1939.07.07
申请号	FRD843653	申请日期	1938.03.14
申请人		发明人	ROIRANT EMILE
分类号	B43L5/00	主分类号	B43L5/00
代理机构		代理人
主权项
地址

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PARTICULES PRE-EXPANSEES DE RESINE DE PROPYLENE, PROCEDE DE PRODUCTION ET DISPOSITIF DE RESTRICTION DE DEBIT.