| 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 | Pulverizing and mulching attachment | US5334225 | 1925-08-29 | US1616590A | 1927-02-08 | MCCARTHY JOHN J |
| 122 | Ground-leveling device | US68396724 | 1924-01-02 | US1601542A | 1926-09-28 | JOSEPH SCHERMULY; FITZPATRICK FRANCIS J |
| 123 | Soil pulverizer | US3542825 | 1925-06-06 | US1587223A | 1926-06-01 | FERRIS HENRY L |
| 124 | Agricultural implement | US1511625 | 1925-03-12 | US1554282A | 1925-09-22 | JENS JENSEN |
| 125 | Land leveler | US46428221 | 1921-04-27 | US1487723A | 1924-03-25 | CORBITT JAMES H |
| 126 | Brush grubber and leveler | US53038922 | 1922-01-19 | US1469517A | 1923-10-02 | COMLY LEAK EDWARD |
| 127 | Scraper attachment for tractors | US53884822 | 1922-02-24 | US1459566A | 1923-06-19 | ANDREWS EDGAR J |
| 128 | Drag | US50653721 | 1921-10-08 | US1438655A | 1922-12-12 | JOHN LINDEMAN; WILLIAM HEDRICH |
| 129 | Clod crusher | US39069320 | 1920-06-22 | US1418260A | 1922-05-30 | HOOD CLAIRE C |
| 130 | Harrow attachment | US39148820 | 1920-06-24 | US1402586A | 1922-01-03 | JOSHUA ERWIN DAVID |
| 131 | Leveling-harrow | US33850919 | 1919-11-17 | US1389808A | 1921-09-06 | BLOOMFIELD JOHN C |
| 132 | Land-drag | US28908219 | 1919-04-10 | US1379033A | 1921-05-24 | MATHENY CHARLES A |
| 133 | Land-leveler and drag | US34648319 | 1919-12-22 | US1368585A | 1921-02-15 | VIGIL JUAN M |
| 134 | Ground-mulshing and insect-displacing drag | US35233220 | 1920-01-19 | US1357905A | 1920-11-02 | ROSENBERG OLIVER H |
| 135 | Scraper and leveler | US25797318 | 1918-10-14 | US1333815A | 1920-03-16 | MORRIS HARRY V |
| 136 | Ditch or drain forming implement. | US17094917 | 1917-05-25 | US1258749A | 1918-03-12 | CULBERTSON JAMES S |
| 137 | Weed-destroying machine. | US14293317 | 1917-01-17 | US1234581A | 1917-07-24 | THOMPSON CHARLES W |
| 138 | Excavating-machine. | US10600916 | 1916-06-26 | US1221848A | 1917-04-10 | ENGELBRECHT JULIUS |
| 139 | Road-drag. | US7484516 | 1916-01-28 | US1215011A | 1917-02-06 | FINDLEY WILLIAM |
| 140 | Plow. | US1911651837 | 1911-09-28 | US1206757A | 1916-11-28 | FURLOW WILLIAM H; DUNN JOHN C |
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