专利检索_ 用浮动物料或气流液流或泡沫流通过槽管道或管子输送散状物料专利检索_ 用浮动物料或气流液流或泡沫流通过槽管道或管子输送散状物料专利检索查询

子分类：

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
141	Pneumatic elevator and weigher.	US1899733744	1899-10-16	US641045A	1900-01-09	SCHUMAN JAMES B

142	Bearing for throwing-wheels for pneumatic elevators.	US1898692940	1898-10-07	US636372A	1899-11-07	WILLIAMSON GEORGE WARREN

143	Pneumatic-despatch system	US623509D		US623509A	1899-04-25

144	Pneumatic stacker	US608306D		US608306A	1898-08-02

145	Pneumatic-despatch tube	US603174D		US603174A	1898-04-26

146	davidson	US599055D		US599055A	1898-02-15

147	tonee	US592673D		US592673A	1897-10-26

148	Pneumatic conveyer	US588908D		US588908A	1897-08-24

149	Pneumatic grain-conveyer	US559615D		US559615A	1896-05-05

150	Feeding	US551074D		US551074A	1895-12-10

151	Pneumatic straw-stacker	US537691D		US537691A	1895-04-16

152	Pneumatic stacker	US534381D		US534381A	1895-02-19

153	Centrifugal discharger for straw-stackers	US517524D		US517524A	1894-04-03

154	Hydraulic mining apparatus	US489751D		US489751A	1893-01-10

155	Dredging apparatus	US457314D		US457314A	1891-08-04

156	Poison-distributer	US400145D		US400145A	1889-03-26

157	Hydraulic excavator	US371561D		US371561A	1887-10-18

158	doyle	US312983D		US312983A	1885-02-24

159	Improvement in apparatus for elevating and moving grain	US223036D		US223036A	1879-12-30

160	Improved sulphur-duster	US56711D		US56711A	1866-07-31

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