-
3371709
-
Patent number 3,371,709
-
Issue date Mar 5, 1968
-
F28 - HEAT EXCHANGE IN GENERAL
-
1943855
-
Patent number 1,943,855
-
Issue date Jan 16, 1934
-
C01 - INORGANIC CHEMISTRY
-
1617867
-
Patent number 1,617,867
-
Issue date Feb 15, 1927
-
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
-
1582181
-
Patent number 1,582,181
-
Issue date Apr 27, 1926
-
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
-
1204561
-
Patent number 1,204,561
-
Issue date Nov 14, 1916
-
F28 - HEAT EXCHANGE IN GENERAL
-
968550
-
Patent number 968,550
-
Issue date Aug 30, 1910
-
F28 - HEAT EXCHANGE IN GENERAL
-
835893
-
Patent number 835,893
-
Issue date Nov 13, 1906
-
F28 - HEAT EXCHANGE IN GENERAL
-
509045
-
Patent number 509,045
-
Issue date Nov 21, 1893
-
F28 - HEAT EXCHANGE IN GENERAL
-
503868
-
Patent number 503,868
-
Issue date Aug 22, 1893
-
F28 - HEAT EXCHANGE IN GENERAL
-
471974
-
Patent number 471,974
-
Issue date Mar 29, 1892
-
F28 - HEAT EXCHANGE IN GENERAL
-
457533
-
Patent number 457,533
-
Issue date Aug 11, 1891
-
F28 - HEAT EXCHANGE IN GENERAL
-
436288
-
Patent number 436,288
-
Issue date Sep 9, 1890
-
F28 - HEAT EXCHANGE IN GENERAL
-
181079
-
Patent number 181,079
-
Issue date Aug 15, 1876
-
F28 - HEAT EXCHANGE IN GENERAL
-
92429
-
Patent number 92,429
-
Issue date Jul 13, 1869
-
F28 - HEAT EXCHANGE IN GENERAL
-
90242
-
Patent number 90,242
-
Issue date May 18, 1869
-
F28 - HEAT EXCHANGE IN GENERAL
-
82593
-
Patent number 82,593
-
Issue date Sep 29, 1868
-
F28 - HEAT EXCHANGE IN GENERAL
-
32845
-
Patent number 32,845
-
Issue date Jul 16, 1861
-
F28 - HEAT EXCHANGE IN GENERAL