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经营范围
发明名称
Motion picture apparatus
摘要
申请公布号
US1804685(A)
申请公布日期
1931.05.12
申请号
US19290337189
申请日期
1929.02.04
申请人
GRIMM WILLIAM K
发明人
GRIMM WILLIAM K.
分类号
G03B21/32;G03B41/10;G03B41/14
主分类号
G03B21/32
代理机构
代理人
主权项
地址
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