序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
---|---|---|---|---|---|---|
121 | Drive connection | US56000431 | 1931-08-28 | US1868594A | 1932-07-26 | BLACK PAUL T; BOETTNER WILLIAM P |
122 | Bushing arbor | US39355729 | 1929-09-18 | US1778516A | 1930-10-14 | YAGER GEORGE F |
123 | Driving mechanism for wheel lathes | US39847220 | 1920-07-23 | US1424754A | 1922-08-08 | CULLEN JAMES K |
124 | Lathe center and driver | US35685020 | 1920-02-07 | US1361120A | 1920-12-07 | GEORGE WEATHERBY |