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发明名称
LAMPCHANGING APPARATUS
摘要
申请公布号
CA475962(A)
申请公布日期
1951.08.07
申请号
CAD475962
申请日期
申请人
WALLACE AND TIERNAN PRODUCTS
发明人
JOHN RICHARDS MACKAY
分类号
主分类号
代理机构
代理人
主权项
地址
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