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发明名称
Improvements in scaling devices
摘要
申请公布号
GB357009(A)
申请公布日期
1931.09.17
申请号
GB19300034957
申请日期
1930.11.20
申请人
JOHANNES CORNELIS VAN ALPHEN;PIETER TER HAAK;THEODOR LECHELT
发明人
分类号
F28G3/10
主分类号
F28G3/10
代理机构
代理人
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地址
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