序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
---|---|---|---|---|---|---|
181 | Improvement in tobacco-driers | US139977D | US139977A | 1873-06-17 | ||
182 | Improvement in curing tobacco | US135468D | US135468A | 1873-02-04 | ||
183 | Improvement in tobacco and gorain-curer | US93347D | US93347A | 1869-08-03 | ||
184 | Improvement in renovating tobacco | US3673D | US3673A | 1844-07-22 | ||