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发明名称
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摘要
申请公布号
US2053177(A)
申请公布日期
1936.09.01
申请号
US19340756373
申请日期
1934.12.06
申请人
JAMES NEILL & COMPANY (SHEFFIELD) LIMITED
发明人
BOWER WILLIAM LESLIE
分类号
B23Q3/154
主分类号
B23Q3/154
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