-
2307298
-
Patent number 2,307,298
-
Issue date Jan 5, 1943
-
F28 - HEAT EXCHANGE IN GENERAL
-
1838568
-
Patent number 1,838,568
-
Issue date Dec 29, 1931
-
F28 - HEAT EXCHANGE IN GENERAL
-
1821562
-
Patent number 1,821,562
-
Issue date Sep 1, 1931
-
F28 - HEAT EXCHANGE IN GENERAL
-
1812515
-
Patent number 1,812,515
-
Issue date Jun 30, 1931
-
F28 - HEAT EXCHANGE IN GENERAL
-
1730719
-
Patent number 1,730,719
-
Issue date Oct 8, 1929
-
F28 - HEAT EXCHANGE IN GENERAL
-
1609408
-
Patent number 1,609,408
-
Issue date Dec 7, 1926
-
F28 - HEAT EXCHANGE IN GENERAL
-
1486326
-
Patent number 1,486,326
-
Issue date Mar 11, 1924
-
F28 - HEAT EXCHANGE IN GENERAL
-
1460805
-
Patent number 1,460,805
-
Issue date Jul 3, 1923
-
F28 - HEAT EXCHANGE IN GENERAL
-
1429440
-
Patent number 1,429,440
-
Issue date Sep 19, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1426725
-
Patent number 1,426,725
-
Issue date Aug 22, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1417783
-
Patent number 1,417,783
-
Issue date May 30, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1412862
-
Patent number 1,412,862
-
Issue date Apr 18, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1408060
-
Patent number 1,408,060
-
Issue date Feb 28, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1403226
-
Patent number 1,403,226
-
Issue date Jan 10, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1401604
-
Patent number 1,401,604
-
Issue date Dec 27, 1921
-
F28 - HEAT EXCHANGE IN GENERAL
-
1368202
-
Patent number 1,368,202
-
Issue date Feb 8, 1921
-
F28 - HEAT EXCHANGE IN GENERAL
-
1356897
-
Patent number 1,356,897
-
Issue date Oct 26, 1920
-
F28 - HEAT EXCHANGE IN GENERAL
-
1354964
-
Patent number 1,354,964
-
Issue date Oct 5, 1920
-
F28 - HEAT EXCHANGE IN GENERAL
-
1354351
-
Patent number 1,354,351
-
Issue date Sep 28, 1920
-
F28 - HEAT EXCHANGE IN GENERAL
-
1338753
-
Patent number 1,338,753
-
Issue date May 4, 1920
-
F28 - HEAT EXCHANGE IN GENERAL
-
1321515
-
Patent number 1,321,515
-
Issue date Nov 11, 1919
-
F28 - HEAT EXCHANGE IN GENERAL
-
1315249
-
Patent number 1,315,249
-
Issue date Sep 9, 1919
-
F28 - HEAT EXCHANGE IN GENERAL
-
1301984
-
Patent number 1,301,984
-
Issue date Apr 29, 1919
-
F28 - HEAT EXCHANGE IN GENERAL
-
1279527
-
Patent number 1,279,527
-
Issue date Sep 24, 1918
-
F28 - HEAT EXCHANGE IN GENERAL
-
1255173
-
Patent number 1,255,173
-
Issue date Feb 5, 1918
-
F28 - HEAT EXCHANGE IN GENERAL
-
1233429
-
Patent number 1,233,429
-
Issue date Jul 17, 1917
-
F28 - HEAT EXCHANGE IN GENERAL
-
1216509
-
Patent number 1,216,509
-
Issue date Feb 20, 1917
-
F28 - HEAT EXCHANGE IN GENERAL
-
1191359
-
Patent number 1,191,359
-
Issue date Jul 18, 1916
-
F28 - HEAT EXCHANGE IN GENERAL
-
1140494
-
Patent number 1,140,494
-
Issue date May 25, 1915
-
F28 - HEAT EXCHANGE IN GENERAL
-
1073579
-
Patent number 1,073,579
-
Issue date Sep 16, 1913
-
F28 - HEAT EXCHANGE IN GENERAL