| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Fluted coulter disc blade | US3559748D | 1968-07-18 | US3559748A | 1971-02-02 | SHELTON LEE E |
| A fluted coulter disc blade having a fluted peripheral portion with a diminished thickness peripheral portion outwardly of the flutes to provide a substantially circular and straight cutting edge.
|
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| 242 | Spring-loaded rolling coulter | US3451489D | 1965-10-21 | US3451489A | 1969-06-24 | SULLIVAN JAMES F |
| 243 | US862011D | 1968-11-20 | UST862011I4 | 1969-05-06 | ||
| 244 | Coulter mounting | US57634666 | 1966-08-31 | US3411589A | 1968-11-19 | MOE RICHARD G |
| 245 | Coulter spring trash holder | US36490564 | 1964-05-05 | US3260316A | 1966-07-12 | RYAN FRANCIS B |
| 246 | Two-way plow with disks for coulters and moldboards | US18750462 | 1962-04-16 | US3115191A | 1963-12-24 | WARD GERALD G |
| 247 | Combination gauge wheel and colter | US2635360 | 1960-05-02 | US3047077A | 1962-07-31 | SIMPSON VINSON R; ORENDORFF JOHN W |
| 248 | Pressure-shoe attachment for plow colter | US77422258 | 1958-11-17 | US3010525A | 1961-11-28 | PRIHODA JOHN G |
| 249 | Coulter assembly | US56891056 | 1956-05-01 | US2949968A | 1960-08-23 | PAUL STONER |
| 250 | Trash shoe for rolling coulters | US72668258 | 1958-04-07 | US2942675A | 1960-06-28 | RALPH SISK |
| 251 | Power driven rolling cutter | US57964956 | 1956-04-20 | US2834275A | 1958-05-13 | DOYLE HINES |
| 252 | Coulter mounting | US52730255 | 1955-08-09 | US2826134A | 1958-03-11 | WILSON RAYMOND W |
| 253 | Adjustable beam connection for rolling disk coulter | US40426554 | 1954-01-15 | US2757596A | 1956-08-07 | ADELS JOHN T |
| 254 | Coulter clamp | US32824852 | 1952-12-27 | US2722879A | 1955-11-08 | MCNALLY HAROLD T; SEWELL WALTER W; WILSON RAYMOND W |
| 255 | Plow colter | US1277748 | 1948-03-03 | US2596574A | 1952-05-13 | LUTES OAKLEY D |
| 256 | Rolling colter provided with driving lugs | US5731048 | 1948-10-29 | US2573037A | 1951-10-30 | LUTES OAKLEY D |
| 257 | Agricultural implement | US54998144 | 1944-08-18 | US2403209A | 1946-07-02 | MAXWELL BOUMPHREY GEOFFREY |
| 258 | Colter | US53443344 | 1944-05-06 | US2375372A | 1945-05-08 | ARTHUR LAITINEN |
| 259 | Plowing device | US43677742 | 1942-03-30 | US2364878A | 1944-12-12 | OTTO STORZ |
| 260 | Colter | US47448543 | 1943-02-02 | US2356770A | 1944-08-29 | LOHMAN HENRY E |
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