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发明名称
Indicating device
摘要
申请公布号
US2292654(A)
申请公布日期
1942.08.11
申请号
US19400321329
申请日期
1940.02.28
申请人
PALMER FREDERICK M
发明人
PALMER FREDERICK M.
分类号
主分类号
代理机构
代理人
主权项
地址
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