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发明名称
Temperature regulated tuning fork
摘要
申请公布号
US2174414(A)
申请公布日期
1939.09.26
申请号
US19390269914
申请日期
1939.04.25
申请人
WIDE WORLD PHOTOS, INC.
发明人
COOLEY AUSTIN G.
分类号
G10G7/02
主分类号
G10G7/02
代理机构
代理人
主权项
地址
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