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发明名称
Processo ed installazione per la fabbricazione di tubi in cemento-amianto di piccolo diametro e di piccolo spessore.
摘要
申请公布号
CH157873(A)
申请公布日期
1932.10.31
申请号
CHD157873
申请日期
1931.02.11
申请人
"ETERNIT" PIETRA ARTIFICIALE SOCIETA ANONIMA
发明人
ANONIMA "ETERNIT" PIETRA ARTIFICIALE SOCIETA
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主分类号
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