| 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 | Ground cutter and pulverizer. | US1912711670 | 1912-07-26 | US1103741A | 1914-07-14 | COX ALBERT M |
| 182 | Harrow-tooth. | US1912717403 | 1912-08-27 | US1061570A | 1913-05-13 | RUTLEDGE ROBERT P; BOLAND RANDSOME G |
| 183 | Harrow-tooth. | US1910580827 | 1910-09-07 | US985871A | 1911-03-07 | WHIPPS JAMES |
| 184 | Cotton-blocking attachment for cultivators. | US1909524024 | 1909-10-22 | US949795A | 1910-02-22 | HORNER JOHN P |
| 185 | Plow attachment. | US1909504342 | 1909-06-25 | US948614A | 1910-02-08 | MCCALL LEMUEL H |
| 186 | Potato-vine cutter. | US1907376333 | 1907-05-29 | US941247A | 1909-11-23 | GREGORY GEORGE P |
| 187 | Harrow-tooth. | US1906334520 | 1906-09-13 | US849928A | 1907-04-09 | SMITH DAVIT M |
| 188 | Harrow-tooth holder. | US1906298965 | 1906-02-01 | US823324A | 1906-06-12 | DUNLOP ANDREW G |
| 189 | Harrow-tooth fastener. | US1905255764 | 1905-04-15 | US817150A | 1906-04-10 | ALLEN LEMUEL E |
| 190 | Harrow-tooth fastener. | US1904231273 | 1904-11-03 | US779834A | 1905-01-10 | BLAINE GEORGE E |
| 191 | Harrow-tooth fastening. | US1904206315 | 1904-05-04 | US770868A | 1904-09-27 | PORTEOUS JAMES |
| 192 | quickel | US753312D | US753312A | 1904-03-01 | ||
| 193 | Harrow or cultivator tooth | US751262D | US751262A | 1904-02-02 | ||
| 194 | Weeder-tooth. | US1902116637 | 1902-07-23 | US738477A | 1903-09-08 | PATTON ALBERT J |
| 195 | Harrow-tooth and means for supporting same. | US1901057012 | 1901-04-22 | US716912A | 1902-12-30 | MACPHAIL JAMES |
| 196 | Spike-tooth harrow. | US1902088529 | 1902-01-06 | US701735A | 1902-06-03 | JONES THOMAS D |
| 197 | Harrow-tooth. | US1900019559 | 1900-06-08 | US669258A | 1901-03-05 | LANZ JOHN |
| 198 | Tooth for harrows. | US1899704492 | 1899-02-04 | US656722A | 1900-08-28 | KRAUS JOHANN |
| 199 | Harrow-tooth. | US1899728715 | 1899-08-28 | US649124A | 1900-05-08 | CAMPBELL HARDY W |
| 200 | Tooth for agricultural implements | US623390D | US623390A | 1899-04-18 | ||
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