专利检索_ 包括形状相似的啮合部件而不需使用任何附加元件或构件的连接器专利检索_ 包括形状相似的啮合部件而不需使用任何附加元件或构件的连接器专利检索查询

子分类：

序号	专利名	申请号	公开（公告）号	公开（公告）日
181	Car-coupling	US344316D	US344316A	1886-06-22

182	Petcrs	US343712D	US343712A	1886-06-15

183	Car-coupling	US314577D	US314577A	1885-03-31

184	Thomas peachy evajsts	US309702D	US309702A	1884-12-23

185	Car-coupling	US302074D	US302074A	1884-07-15

186	Car-coupling	US297829D	US297829A	1884-04-29

187	Ed waed l	US297293D	US297293A	1884-04-22

188	Car-coupling	US296957D	US296957A	1884-04-15

189	Henby l	US296577D	US296577A	1884-04-08

190	Assig-noks to wilson	US275721D	US275721A	1883-04-10

191	el simpson	US275720D	US275720A	1883-04-10

192	Feank	US267908D	US267908A	1882-11-21

193	James a	US267621D	US267621A	1882-11-14

194	Chaeles f	US263764D	US263764A	1882-09-05

195	Charles h	US228127D	US228127A	1880-05-25

196	Improvement in car-couplings	US218204D	US218204A	1879-08-05

197	Improvement in car-couplings	US215332D	US215332A	1879-05-13

198	Improvement in car-couplings	US194543D	US194543A	1877-08-28

199	Improvement in car-couplings	US190305D	US190305A	1877-05-01

200	Improvement in car-couplings	US184332D	US184332A	1876-11-14

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