| 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 | Harrow | US28202128 | 1928-05-31 | US1717539A | 1929-06-18 | ANDERSON CALVERT E |
| 122 | Harrow | US13244626 | 1926-08-30 | US1679639A | 1928-08-07 | THOMPSON HENRY B |
| 123 | Ridge smoother | US17607227 | 1927-03-17 | US1657518A | 1928-01-31 | LAWRENCE RICKARD MELVIN |
| 124 | Harrow | US19000327 | 1927-05-09 | US1646549A | 1927-10-25 | TIMOTHY MADDEN |
| 125 | Harrow | US65259923 | 1923-07-19 | US1637633A | 1927-08-02 | JOHN BUSWELL CECIL |
| 126 | Hand lift for harrows | US11900426 | 1926-06-28 | US1626793A | 1927-05-03 | DE ROSA RONALD M |
| 127 | Harrow | US75741624 | 1924-12-22 | US1600269A | 1926-09-21 | BARTHOLOMEW BEDFORD AUGUSTINE |
| 128 | Harrowing and plowing attachment for cultivators | US1557025 | 1925-03-14 | US1578774A | 1926-03-30 | SMITH JOHN T |
| 129 | Drag | US1158125 | 1925-02-25 | US1574605A | 1926-02-23 | FRANK CHARTIER |
| 130 | Harrow | US74335824 | 1924-10-13 | US1557383A | 1925-10-13 | JESSE SUTTON |
| 131 | Harrow | US73273724 | 1924-08-18 | US1553044A | 1925-09-08 | HOLLOMAN LEONIDAS C |
| 132 | Knockdown harrow | US74275524 | 1924-10-10 | US1548196A | 1925-08-04 | JONES EDGAR D |
| 133 | Harrow | US67521423 | 1923-11-16 | US1535050A | 1925-04-21 | SILVA MANUEL J |
| 134 | Bunker drag | US58713022 | 1922-09-09 | US1498365A | 1924-06-17 | CHARLEY ERICKSON |
| 135 | Harrow | US50465321 | 1921-10-01 | US1489954A | 1924-04-08 | LEVI MCCOLLOUGH |
| 136 | Harrow | US41291020 | 1920-09-27 | US1469195A | 1923-09-25 | WESLEY STEELE |
| 137 | Hammer | US53712922 | 1922-02-16 | US1457168A | 1923-05-29 | HORMAN ALFRED E |
| 138 | Cultivator | US59250222 | 1922-10-05 | US1457165A | 1923-05-29 | HARVEY EDWARD C |
| 139 | Harrow | US50287621 | 1921-09-24 | US1447862A | 1923-03-06 | EARLES JONES WILLIAM |
| 140 | Harrow | US41849420 | 1920-10-21 | US1431229A | 1922-10-10 | HOLDER WILLIAM R |
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