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发明名称
Lawn mower sharpener
摘要
申请公布号
US2513591(A)
申请公布日期
1950.07.04
申请号
US19460715583
申请日期
1946.12.11
申请人
NORMAN H. GERLACH
发明人
SILFEN ALFRED
分类号
B24B3/42
主分类号
B24B3/42
代理机构
代理人
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