-
-
3353588
-
Patent number 3,353,588
-
Issue date Nov 21, 1967
-
F28 - HEAT EXCHANGE IN GENERAL
-
3302693
-
Patent number 3,302,693
-
Issue date Feb 7, 1967
-
F28 - HEAT EXCHANGE IN GENERAL
-
3236291
-
Patent number 3,236,291
-
Issue date Feb 22, 1966
-
F28 - HEAT EXCHANGE IN GENERAL
-
2951686
-
Patent number 2,951,686
-
Issue date Sep 6, 1960
-
F28 - HEAT EXCHANGE IN GENERAL