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发明名称
Stack control
摘要
申请公布号
US1843840(A)
申请公布日期
1932.02.02
申请号
US19290357526
申请日期
1929.04.23
申请人
F. J. RYAN AND COMPANY
发明人
RYAN FREDERICK J.
分类号
C10B51/00
主分类号
C10B51/00
代理机构
代理人
主权项
地址
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