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发明名称
Improvements in or relating to guards for pulley-blocks
摘要
申请公布号
GB382818(A)
申请公布日期
1932.11.03
申请号
GB19320002264
申请日期
1932.01.25
申请人
OIL WELL SUPPLY COMPANY
发明人
分类号
B66D3/04;B66D3/06
主分类号
B66D3/04
代理机构
代理人
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