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经营范围
发明名称
Improvements in protective devices for photographic cameras
摘要
申请公布号
GB489960(A)
申请公布日期
1938.08.08
申请号
GB19370003606
申请日期
1937.02.06
申请人
ALFRED CROGER MAYO;JOSEPH TERRETT;PURMA CAMERAS LIMITED
发明人
分类号
G03B9/44
主分类号
G03B9/44
代理机构
代理人
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地址
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