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发明名称
Bail ear
摘要
申请公布号
US1897852(A)
申请公布日期
1933.02.14
申请号
US19320629029
申请日期
1932.08.16
申请人
KEYSTONE LANTERN COMPANY
发明人
METZ CARL
分类号
F21L19/00;F21V21/00
主分类号
F21L19/00
代理机构
代理人
主权项
地址
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