| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 201 | Soil-shedding- agbiculttjeal implement | US1445148D | US1445148A | 1923-02-13 | ||
| 202 | Subsoil attachment for plows | US42656020 | 1920-11-26 | US1422418A | 1922-07-11 | COLBY HENRY H |
| 203 | Cutter attachment for plows | US34569819 | 1919-12-18 | US1362279A | 1920-12-14 | YOUMANS BARTOW B |
| 204 | Subsoil attachment for plows | US30326919 | 1919-06-11 | US1360409A | 1920-11-30 | JOHNSON LEONARD L |
| 205 | Subsoiler attachment for plows | US38401120 | 1920-05-25 | US1358836A | 1920-11-16 | WILLIS FRANCIS CHARLES |
| 206 | Plow | US30137819 | 1919-06-03 | US1337868A | 1920-04-20 | WHITE ARTHUR O |
| 207 | Agricultural implement | US28997519 | 1919-04-14 | US1334347A | 1920-03-23 | SIDNEY CARY SAMUEL |
| 208 | Stalk-cutter attachment | US28818919 | 1919-04-07 | US1329154A | 1920-01-27 | WYLIE ARTHUR E |
| 209 | petroff | US1309693D | US1309693A | 1919-07-15 | ||
| 210 | Plow-scraper. | US22777118 | 1918-04-10 | US1280206A | 1918-10-01 | GLASSEY THEODORE W |
| 211 | Plow-cleaning attachment. | US16626017 | 1917-05-03 | US1268823A | 1918-06-11 | DRIVER LE ROY E |
| 212 | Harrow-tooth cleaner. | US18223217 | 1917-07-23 | US1263423A | 1918-04-23 | JOHNSON NILS P |
| 213 | Moldboard-scraper for plows. | US1170515 | 1915-03-03 | US1209354A | 1916-12-19 | STRAND PEDER O |
| 214 | Ground-pulverizer. | US1913788151 | 1913-09-04 | US1101921A | 1914-06-30 | GREENE OSCAR H |
| 215 | Plow. | US1910575995 | 1910-08-06 | US1031594A | 1912-07-02 | SOUTHWICK JAMES W |
| 216 | Combination-cultivator. | US1911603099 | 1911-01-17 | US1019739A | 1912-03-05 | ROPP JACOB |
| 217 | Cotton-chopper. | US1908446138 | 1908-07-30 | US913729A | 1909-03-02 | HYLAND ROBERT R |
| 218 | Weed-cutter. | US1906337728 | 1906-10-06 | US857833A | 1907-06-25 | RICKETTS THOMAS |
| 219 | Land-pulverizer and clod-crusher. | US1904235360 | 1904-12-03 | US799713A | 1905-09-19 | BUSWELL ROBERT J |
| 220 | Road-scarifier. | US1902109719 | 1902-05-31 | US735127A | 1903-08-04 | MORRISON HARRY |
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