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1.发明授权Sharpening-machine to grind or to sharpen tanged files, milling plates or similar tools, including a toothed arc 失效磨削机器研磨或削尖有切屑的文件，铣刨板或类似工具，包括齿形弧
公开(公告)号：US2807914A
公开(公告)日：1957-10-01
申请号：US47770454
申请日：1954-12-27
Applicant: MARCEL PASCAL LOUIS , JOSEPH PASCAL FIRMIN
Inventor： MARCEL PASCAL LOUIS , JOSEPH PASCAL FIRMIN
IPC: B24B3/60
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