-
-
-
3881548
-
Patent number 3,881,548
-
Issue date May 6, 1975
-
F28 - HEAT EXCHANGE IN GENERAL
-
3861460
-
Patent number 3,861,460
-
Issue date Jan 21, 1975
-
F28 - HEAT EXCHANGE IN GENERAL
-
1753953
-
Patent number 1,753,953
-
Issue date Apr 8, 1930
-
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
-
1624066
-
Patent number 1,624,066
-
Issue date Apr 12, 1927
-
F28 - HEAT EXCHANGE IN GENERAL
-
1466703
-
Patent number 1,466,703
-
Issue date Sep 4, 1923
-
F28 - HEAT EXCHANGE IN GENERAL
-
1102071
-
Patent number 1,102,071
-
Issue date Jun 30, 1914
-
F28 - HEAT EXCHANGE IN GENERAL
-
1091376
-
Patent number 1,091,376
-
Issue date Mar 24, 1914
-
F28 - HEAT EXCHANGE IN GENERAL
-
476089
-
Patent number 476,089
-
Issue date May 31, 1892
-
F28 - HEAT EXCHANGE IN GENERAL
-
411618
-
Patent number 411,618
-
Issue date Sep 24, 1889
-
F28 - HEAT EXCHANGE IN GENERAL
-
7250
-
Patent number 7,250
-
Issue date Apr 2, 1850
-
F28 - HEAT EXCHANGE IN GENERAL