专利检索_ 带有专门附属装置的耙例如撒播肥料的装置;专门用途的耙专利检索_ 带有专门附属装置的耙例如撒播肥料的装置;专门用途的耙专利检索查询

序号	专利名	申请号	公开（公告）号	公开（公告）日
161	Spring-tooth harrow	US368146D	US368146A	1887-08-09

162	Harrow	US325734D	US325734A	1885-09-08

163	Harrow	US319451D	US319451A	1885-06-09

164	Furrow-opener	US262461D	US262461A	1882-08-08

165	Cotton-plow	US256348D	US256348A	1882-04-11

166	William p	US232450D	US232450A	1880-09-21

167	Improvement in plows	US222576D	US222576A	1879-12-16

168	Improvement in harrows	US202671D	US202671A	1878-04-23

169	Improvement in harrow-couplings	US195839D	US195839A	1877-10-02

170	Improvement in gang-plows	US170778D	US170778A	1875-12-07

171	Improvement in harrows	US146965D	US146965A	1874-01-27

172	Improvement in harrows	US122765D	US122765A	1872-01-16

173	Improvement in cultivators	US98471D	US98471A	1870-01-04

174	Improvement in combination-plows	US93543D	US93543A	1869-08-10

175	Improvement in corn-marker	US83612D	US83612A	1868-11-03

176	Improvement in ploughs	US62835D	US62835A	1867-03-12

177	Improvement in cultivators	US59013D	US59013A	1866-10-23

178	Improvement in field-markers for planting	US48551D	US48551A	1865-07-04

179	Improvement in plow beams and handles	US41056D	US41056A	1864-01-05

180	Improvement in harrows	US36644D	US36644A	1862-10-14

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