METHOD OF PRODUCING HELICAL SPRINGS OF VARIABLE RIGIDITY,申请号SU19874274283-传众专利搜索

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发明名称	METHOD OF PRODUCING HELICAL SPRINGS OF VARIABLE RIGIDITY
摘要
申请公布号	SU1454555(A1)	申请公布日期	1989.01.30
申请号	SU19874274283	申请日期	1987.04.09
申请人	KZ AVIATSIONNYJ I IM.A.N.TUPOLEVA	发明人	DAVLETSHIN ERNST Z,SU;SHAJKHUTDINOV RAIF M,SU
分类号	B21F3/00	主分类号	B21F3/00
代理机构		代理人
主权项
地址

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