序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
---|---|---|---|---|---|---|
41 | Tractor cultivator | US24667428 | 1928-01-14 | US1760336A | 1930-05-27 | BENJAMIN BERT R |
42 | Soil-vibrating apparatus | US73034624 | 1924-08-06 | US1614273A | 1927-01-11 | BREWER CHARLES A |
43 | Cultivator attachment | US54152422 | 1922-03-06 | US1538749A | 1925-05-19 | HARLEY SCHOON |
44 | Cultivator attachment | US40145720 | 1920-08-05 | US1437110A | 1922-11-28 | BOYD KETTRING CHAUNCEY |
45 | Cultivator attachment | US37814020 | 1920-05-01 | US1421593A | 1922-07-04 | SIMS MILFORD R |