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发明名称
Reflex camera viewfinder including composite setting disk with fresnel lens surfaces and focusing wedges
摘要
申请公布号
US3182576(A)
申请公布日期
1965.05.11
申请号
US19610123383
申请日期
1961.07.06
申请人
VOIGTLANDER A.G.
发明人
PAPKE FRIEDRICH
分类号
G03B13/26;G03B19/12
主分类号
G03B13/26
代理机构
代理人
主权项
地址
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