| 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 | Combination flash arrester and check valve | US53809544 | 1944-05-30 | US2490175A | 1949-12-06 | THURMAN JR OLIVER |
| 142 | Flame arrester | US50981343 | 1943-11-10 | US2447120A | 1948-08-17 | HALL RICHARD C |
| 143 | Flame arrester | US52105144 | 1944-02-04 | US2420599A | 1947-05-13 | JURS PETER C |
| 144 | Fire check | US34594640 | 1940-07-17 | US2332380A | 1943-10-19 | HESS FREDERIC O |
| 145 | Apparatus for preventing back flash in gas lines | US60554432 | 1932-04-15 | US2058650A | 1936-10-27 | WILLIAMS PHILIP S; JOHNSON OLIVER W |
| 146 | Water lock for acetylene generators | US55476531 | 1931-08-03 | US1905198A | 1933-04-25 | HEINZ WENDTLAND |
| 147 | Safety device for gas conduits | US43971930 | 1930-03-28 | US1874019A | 1932-08-30 | FRANCESCO MANGIAMELI |
| 148 | Back fire preventer | US48395430 | 1930-09-23 | US1872368A | 1932-08-16 | HORN WILLIAM H VAN |
| 149 | Automatic fire safety device | US43945330 | 1930-03-27 | US1868708A | 1932-07-26 | WILLIAM HUNT |
| 150 | Hydraulic flash arrester | US22401827 | 1927-10-04 | US1825970A | 1931-10-06 | MESINGER WILLIAM F |
| 151 | Flash arrester | US23106227 | 1927-11-04 | US1778876A | 1930-10-21 | WEAVER JOSEPH B |
| 152 | Combined water seal and check valve | US25969528 | 1928-03-07 | US1776077A | 1930-09-16 | ADOLF MESSER |
| 153 | Means for preventing explosions | US54600322 | 1922-03-23 | US1686051A | 1928-10-02 | WEBER HENRY C P |
| 154 | Acetylene-distribution safety apparatus | US74013624 | 1924-09-26 | US1674172A | 1928-06-19 | WALTER GOERG |
| 155 | Automatic gas cut-off device | US493125 | 1925-01-26 | US1601276A | 1926-09-28 | FRANK WEBB |
| 156 | Nonreturn valve | US56437122 | 1922-05-29 | US1473155A | 1923-11-06 | MATTINGLY CHARLES F; MONTGOMERY CECIL F |
| 157 | Flash check for acetylene-gas tanks | US24970718 | 1918-08-13 | US1407610A | 1922-02-21 | FRANK WESTLUND ALBERT |
| 158 | Hydraulic back-pressure valve. | US1914843425 | 1914-06-06 | US1108863A | 1914-08-25 | HAEDIKE OTTO G; BRADEN ROBERT D |
| 159 | Hydraulic back-pressure valve. | US1912673605 | 1912-01-26 | US1045715A | 1912-11-26 | LIGHTFOOT CECIL |
| 160 | Gas economizer and purifier. | US1909524660 | 1909-10-26 | US974551A | 1910-11-01 | CARPENTER JOHN W |
QQ群二维码
意见反馈
意见反馈