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发明名称
Procédé d'imperméabilisation de papiers spéciaux aptes à retenir les poussières et fumées toxiques et septiques
摘要
申请公布号
FR803962(A)
申请公布日期
1936.10.13
申请号
FRD803962
申请日期
1935.06.29
申请人
SOCIETE D'ETUDES & DE CONSTRUCTION DE MATERIEL DE PROTECTION
发明人
分类号
D21H17/14
主分类号
D21H17/14
代理机构
代理人
主权项
地址
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