序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
181 Improvement in feed-water heaters for locomotives US130759D US130759A 1872-08-20
182 Israel putnam magoon US101287D US101287A 1870-03-29
183 Improvement in feed-water US100344D US100344A 1870-03-01
184 Improvement in feed-water heaters US93790D US93790A 1869-08-17
185 Improvement in peed-water device for boilers US89208D US89208A 1869-04-20
186 pettibone US71604D US71604A 1867-12-03
187 Improvement in steam-generators US68598D US68598A 1867-09-10
188 Jekemiah dahling US66223D US66223A 1867-07-02
189 Improvement in feed-water heaters for locomotives US42539D US42539A 1864-04-26
190 Improvement in heating feed-water apparatus for locomotives US14187D US14187A 1856-02-05
191 Boiler, particularly suitable for locomotives US15386450 1950-04-04 US2679238A 1954-05-25 PIERO CROSTI
192 Feed water heater US44657442 1942-06-11 US2376068A 1945-05-15 MCBATH BARTLEY R
193 Water circulator and feed water heater US24412238 1938-12-05 US2245496A 1941-06-10 PHELAN JULES E
194 Boiler feeding apparatus US24063238 1938-11-16 US2235557A 1941-03-18 DARTREY LEWIS
195 Locomotive feed-water heating equipment US11556836 1936-12-12 US2220365A 1940-11-05 COFFIN JR JOEL S
196 Feed-water heater for boilers, particularly adapted for locomotives US20721038 1938-05-11 US2200492A 1940-05-14 PIETRO CROSTI
197 Feed water preheater US14849937 1937-06-16 US2141899A 1938-12-27 BENNETT FRANK S
198 Locomotive boiler feed water heating system and apparatus US72249834 1934-04-26 US2095238A 1937-10-12 COFFIN JR JOEL S
199 Control valve US5237935 1935-11-30 US2085782A 1937-07-06 BIANCHARD PHILIP D
200 Feed water heater for boilers US3210035 1935-07-18 US2054733A 1936-09-15 SCOTT HARRY A
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