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发明名称
Automatic volume control means for facsimile systems
摘要
申请公布号
US2258871(A)
申请公布日期
1941.10.14
申请号
US19380237107
申请日期
1938.10.26
申请人
THE CROSLEY CORPORATION
发明人
JR. FRANK L. WEDIG,
分类号
H04N1/407
主分类号
H04N1/407
代理机构
代理人
主权项
地址
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