-
-
3578073
-
Patent number 3,578,073
-
Issue date May 11, 1971
-
F28 - HEAT EXCHANGE IN GENERAL
-
3543843
-
Patent number 3,543,843
-
Issue date Dec 1, 1970
-
F28 - HEAT EXCHANGE IN GENERAL
-
1947863
-
Patent number 1,947,863
-
Issue date Feb 20, 1934
-
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
-
1922843
-
Patent number 1,922,843
-
Issue date Aug 15, 1933
-
F28 - HEAT EXCHANGE IN GENERAL
-
1792060
-
Patent number 1,792,060
-
Issue date Feb 10, 1931
-
F28 - HEAT EXCHANGE IN GENERAL
-
1787144
-
Patent number 1,787,144
-
Issue date Dec 30, 1930
-
F28 - HEAT EXCHANGE IN GENERAL
-
1782986
-
Patent number 1,782,986
-
Issue date Nov 25, 1930
-
F28 - HEAT EXCHANGE IN GENERAL
-
1777280
-
Patent number 1,777,280
-
Issue date Oct 7, 1930
-
F28 - HEAT EXCHANGE IN GENERAL
-
1723637
-
Patent number 1,723,637
-
Issue date Aug 6, 1929
-
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
-
1710707
-
Patent number 1,710,707
-
Issue date Apr 30, 1929
-
F28 - HEAT EXCHANGE IN GENERAL
-
1690747
-
Patent number 1,690,747
-
Issue date Nov 6, 1928
-
F28 - HEAT EXCHANGE IN GENERAL
-
1627544
-
Patent number 1,627,544
-
Issue date May 3, 1927
-
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
-
1619284
-
Patent number 1,619,284
-
Issue date Mar 1, 1927
-
F28 - HEAT EXCHANGE IN GENERAL
-
1605157
-
Patent number 1,605,157
-
Issue date Nov 2, 1926
-
F28 - HEAT EXCHANGE IN GENERAL
-
1451190
-
Patent number 1,451,190
-
Issue date Apr 10, 1923
-
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
-
1375413
-
Patent number 1,375,413
-
Issue date Apr 19, 1921
-
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
-
1353855
-
Patent number 1,353,855
-
Issue date Sep 28, 1920
-
F28 - HEAT EXCHANGE IN GENERAL
-
1352560
-
Patent number 1,352,560
-
Issue date Sep 14, 1920
-
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
-
1057788
-
Patent number 1,057,788
-
Issue date Apr 1, 1913
-
F28 - HEAT EXCHANGE IN GENERAL
-
824880
-
Patent number 824,880
-
Issue date Jul 3, 1906
-
F28 - HEAT EXCHANGE IN GENERAL
-
696206
-
Patent number 696,206
-
Issue date Mar 25, 1902
-
F28 - HEAT EXCHANGE IN GENERAL
-
551910
-
Patent number 551,910
-
Issue date Dec 24, 1895
-
F28 - HEAT EXCHANGE IN GENERAL
-
546946
-
Patent number 546,946
-
Issue date Sep 24, 1895
-
F28 - HEAT EXCHANGE IN GENERAL
-
467715
-
Patent number 467,715
-
Issue date Jan 26, 1892
-
F28 - HEAT EXCHANGE IN GENERAL
-
314559
-
Patent number 314,559
-
Issue date Mar 31, 1885
-
F28 - HEAT EXCHANGE IN GENERAL
-
278056
-
Patent number 278,056
-
Issue date May 22, 1883
-
F28 - HEAT EXCHANGE IN GENERAL
-
247096
-
Patent number 247,096
-
Issue date Sep 13, 1881
-
F28 - HEAT EXCHANGE IN GENERAL
-
196902
-
Patent number 196,902
-
Issue date Nov 6, 1877
-
F28 - HEAT EXCHANGE IN GENERAL
-
144834
-
Patent number 144,834
-
Issue date Nov 25, 1873
-
F28 - HEAT EXCHANGE IN GENERAL