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发明名称
Spreizvorrichtung fuer Kolbenringe
摘要
申请公布号
DE652460(C)
申请公布日期
1937.11.04
申请号
DE1935P072267D
申请日期
1935.12.07
申请人
THE PERFECT CIRCLE COMPANY
发明人
分类号
F16J9/06
主分类号
F16J9/06
代理机构
代理人
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