专利检索_ 带专用附属装置的犁例如带土下施肥工具碎土块机的专利检索_ 带专用附属装置的犁例如带土下施肥工具碎土块机的专利检索查询

子分类：

序号	专利名	申请号	公开（公告）号	公开（公告）日
241	Sulky-plow	US230859D	US230859A	1880-08-10

242	Cleaner for grain-drill hoes	US230068D	US230068A	1880-07-13

243	Peters	US223881D	US223881A	1880-01-27

244	Improvement in riding-plows	US216714D	US216714A	1879-06-17

245	Improvement in plows	US213149D	US213149A	1879-03-11

246	Improvement in sulky-plows	US212341D	US212341A	1879-02-18

247	Improvement in sulky-plows	US186673D	US186673A	1877-01-30

248	Improvement in sulky-plows	US185729D	US185729A	1876-12-26

249	Improvement in attachments for cleaning plows	US180166D	US180166A	1876-07-25

250	Improvement in sulky-plows	US179014D	US179014A	1876-06-20

251	Improvement in wheel-harrows	US169623D	US169623A	1875-11-09

252	Edmund deewent	US157119D	US157119A	1874-11-24

253	Improvement in plows	US145120D	US145120A	1873-12-02

254	Improvement in gang-plows	US125280D	US125280A	1872-04-02

255	Improvement in plow attachments for cutting stubble	US116446D	US116446A	1871-06-27

256	Improvement in seeding-cultivators	US114881D	US114881A	1871-05-16

257	Improvement in combined plows and scrapers for roads	US108176D	US108176A	1870-10-11

258	Improvement in gang-flows	US99538D	US99538A	1870-02-08

259	Improvement in devices for cleaning plows	US92959D	US92959A	1869-07-27

260	Improvement in cultivators	US92350D	US92350A	1869-07-06

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