序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
---|---|---|---|---|---|---|
241 | Improvement in machines for channeling the soles of boots and shoes | US149538D | US149538A | 1874-04-07 | ||
242 | Improvement in machines for cutting and punching leather straps | US139388D | US139388A | 1873-05-27 | ||
243 | Improvement in machines for cutting rands for boots and shoes | US133686D | US133686A | 1872-12-03 | ||