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发明名称
Perfectionnement aux assemblages de ressorts en spirale
摘要
申请公布号
FR948943(A)
申请公布日期
1949.08.16
申请号
FRD948943
申请日期
1947.06.13
申请人
发明人
FERMIN ALPHONSE-PIERRE-JEAN;HEEMERT VAN;ROOKMAAKER
分类号
A47C23/053
主分类号
A47C23/053
代理机构
代理人
主权项
地址
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