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发明名称
Rueckschlagklappe
摘要
申请公布号
DE1013134(B)
申请公布日期
1957.08.01
申请号
DE1953E008278
申请日期
1953.12.15
申请人
FA. JOHANNES ERHARD
发明人
REPPERT KARL
分类号
F16K1/226
主分类号
F16K1/226
代理机构
代理人
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