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发明名称
Dispositif anti-gel pour chauffage central, canalisations d'eau, etc.
摘要
申请公布号
FR948842(A)
申请公布日期
1949.08.11
申请号
FRD948842
申请日期
1947.06.20
申请人
发明人
AUVERT ROBERT
分类号
F16L41/00;F24D19/00
主分类号
F16L41/00
代理机构
代理人
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地址
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