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发明名称
Area-estimating device for sheet material
摘要
申请公布号
US1780237(A)
申请公布日期
1930.11.04
申请号
US19250015103
申请日期
1925.03.12
申请人
KRIPPENDORF KALCULATOR COMPANY
发明人
LESLIE BERNARD S.
分类号
G01B5/26
主分类号
G01B5/26
代理机构
代理人
主权项
地址
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