| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Cultivator | US308765D | US308765A | 1884-12-02 | ||
| 102 | Sulky-plow | US261365D | US261365A | 1882-07-18 | ||
| 103 | Sulky-plow | US243236D | US243236A | 1881-06-21 | ||
| 104 | William steait | US233046D | 1880-02-14 | US233046A | 1880-10-05 | |
| 105 | Improvement in plows | US93994D | US93994A | 1869-08-24 | ||
| 106 | Improvement in gang-plows | US86608D | US86608A | 1869-02-02 | ||
| 107 | John wilde | US74652D | US74652A | 1868-02-18 | ||
| 108 | Improvement in gang-plows | US32958D | US32958A | 1861-07-30 | ||
QQ群二维码
意见反馈
意见反馈