| 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 | Fertilizer applicator | US46011774 | 1974-04-11 | US3863842A | 1975-02-04 | MCFARLAND RAYMOND J; MCFARLAND DAVID L |
| A fertilizer applicator for mounting on a cultivator or similar earthworking tool. The applicator is particularly suited for dispensing gaseous fertilizers, most typically, anhydrous ammonia, and has features that eliminate plugging and increase durability.
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| 202 | Harrows | US3670670D | 1970-06-05 | US3670670A | 1972-06-20 | VISSERS HERBERT |
| The invention relates to a harrow having one or more transversely reciprocating teeth carrying beams and further having a device for sowing seeds. The teeth of said reciprocating harrow beam or beams are each provided or united with a channel extending longitudinal of the tooth and said channel at its upper end is connected to a seed supply and has at or near its lower end an outlet.
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| 203 | Device for exposing buried objects | US3626895D | 1969-09-15 | US3626895A | 1971-12-14 | ENDEN DAVID |
| Apparatus for exposing a buried object comprising pronglike digging means for loosening the soil surrounding the buried object and means for projecting a stream of air toward the soil loosening end of the digging means for removing (i.e. for blowing away) the loosened soil.
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| 204 | Tooth bar attachment for harrows and the like | US39311453 | 1953-11-19 | US2741966A | 1956-04-17 | SLOCUM ARTHUR G |
| 205 | Disk harrow | US20614238 | 1938-05-05 | US2191537A | 1940-02-27 | JOHNSTON MILLER SAMUEL |
| 206 | Weeder attachment for harrows | US22594727 | 1927-10-13 | US1720490A | 1929-07-09 | KOLLER OTTO R |
| 207 | Harrow | US13656126 | 1926-09-20 | US1629356A | 1927-05-17 | MYERS MILTON C |
| 208 | Harrow | US4405025 | 1925-07-16 | US1605183A | 1926-11-02 | GUTHRIE JAMES B |
| 209 | Harrow | US58245322 | 1922-08-17 | US1503722A | 1924-08-05 | STRICKLAND DEWITT W |
| 210 | William willis wheeler | US1440323D | US1440323A | 1922-12-26 | ||
| 211 | Soil or ture renovating brush harrow | US47589521 | 1921-06-08 | US1421060A | 1922-06-27 | BROOK BASIL B |
| 212 | Weeder attachment | US35138620 | 1920-01-14 | US1386483A | 1921-08-02 | HOWARD ADAMS CHARLES |
| 213 | Weeding-harrow | US27661419 | 1919-02-12 | US1348887A | 1920-08-10 | JOHN MCKEAG |
| 214 | Harrow | US32064019 | 1919-08-29 | US1345966A | 1920-07-06 | SIVILS FLOYD E |
| 215 | Attachment for drags | US27611719 | 1919-02-11 | US1329953A | 1920-02-03 | EMIL BORGESSON |
| 216 | Harrow. | US7298016 | 1916-01-19 | US1244993A | 1917-10-30 | LEE WILLIAM H |
| 217 | Expanding horse-hoe. | US1910568856 | 1910-06-25 | US1001801A | 1911-08-29 | BAIN JAMES |
| 218 | Horse-drag. | US1909518787 | 1909-09-21 | US957185A | 1910-05-10 | BRAUN WILLIAM C |
| 219 | Plow. | US1907355300 | 1907-02-01 | US881391A | 1908-03-10 | FARRINGTON JOHNATHAN W |
| 220 | Cultivator-guide. | US1907355981 | 1907-02-06 | US864170A | 1907-08-27 | JONES ROBERT M |
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