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All Patents in class 137/75 | |||||
Number | Date | Patentee | Title | Type | |
2,150,858 | Mar. 14, 1939 | G.K. Eggleston | Control Device | temperature controls | |
2,860,649 | Nov. 18, 1958 | D.L. Billian | Emergency shut-off valve | ||
2,867,228 | Jan. 06, 1959 | R.V. Klikunas, F.F. Rike | Emergency shut-off valve |