Method of forging nut blanks having axially extending skirt portions and attaching awasher thereto |
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申请号 | US40496154 | 申请日 | 1954-01-19 | 公开(公告)号 | US2814812A | 公开(公告)日 | 1957-12-03 |
申请人 | ILLINOIS TOOL WORKS; | 发明人 | WILLIAM STERN; | ||||
摘要 | |||||||
权利要求 | |||||||
说明书全文 |