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发明名称
Device for sharpening lawn mowers
摘要
申请公布号
US2158191(A)
申请公布日期
1939.05.16
申请号
US19370145482
申请日期
1937.05.29
申请人
ROBERT L WOLFE
发明人
L'WOLFE ROBERT
分类号
B23D71/00
主分类号
B23D71/00
代理机构
代理人
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地址
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