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发明名称
ENVIRONMENTALLY COMPENSATED FOLLOW-FOCUS FLASH PHOTOGRAPHY
摘要
申请公布号
US3583299(A)
申请公布日期
1971.06.08
申请号
USD3583299
申请日期
1968.10.07
申请人
POLAROID CORP.
发明人
EDWIN H. LAND
分类号
G03B7/16;G03B9/70;(IPC1-7):G03B7/08;G01J1/42
主分类号
G03B7/16
代理机构
代理人
主权项
地址
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