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经营范围
发明名称
Apparatus for holding and guiding a chain of slides for successive display
摘要
申请公布号
US2563893(A)
申请公布日期
1951.08.14
申请号
US19480060542
申请日期
1948.11.17
申请人
THE VITARAMA CORPORATION
发明人
WALLER FRED;SHIELDS JAMES C.
分类号
G03B23/12
主分类号
G03B23/12
代理机构
代理人
主权项
地址
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