-
Heat recovery apparatus
-
Patent number 4,040,477
-
Issue date Aug 9, 1977
-
Thayne K. Garberick
-
F24 - HEATING RANGES VENTILATING
-
3477501
-
Patent number 3,477,501
-
Issue date Nov 11, 1969
-
F28 - HEAT EXCHANGE IN GENERAL
-
1835727
-
Patent number 1,835,727
-
Issue date Dec 8, 1931
-
F28 - HEAT EXCHANGE IN GENERAL
-
1816466
-
Patent number 1,816,466
-
Issue date Jul 28, 1931
-
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
-
1782325
-
Patent number 1,782,325
-
Issue date Nov 18, 1930
-
B60 - VEHICLES IN GENERAL
-
1543405
-
Patent number 1,543,405
-
Issue date Jun 23, 1925
-
F28 - HEAT EXCHANGE IN GENERAL
-
1500838
-
Patent number 1,500,838
-
Issue date Jul 8, 1924
-
F28 - HEAT EXCHANGE IN GENERAL
-
1438611
-
Patent number 1,438,611
-
Issue date Dec 12, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1417987
-
Patent number 1,417,987
-
Issue date May 30, 1922
-
F28 - HEAT EXCHANGE IN GENERAL
-
1400815
-
Patent number 1,400,815
-
Issue date Dec 20, 1921
-
B60 - VEHICLES IN GENERAL
-
912883
-
Patent number 912,883
-
Issue date Feb 16, 1909
-
F28 - HEAT EXCHANGE IN GENERAL
-
498310
-
Patent number 498,310
-
Issue date May 30, 1893
-
F28 - HEAT EXCHANGE IN GENERAL
-
408420
-
Patent number 408,420
-
Issue date Aug 6, 1889
-
F28 - HEAT EXCHANGE IN GENERAL
-
178395
-
Patent number 178,395
-
Issue date Jun 6, 1876
-
F28 - HEAT EXCHANGE IN GENERAL
-
170743
-
Patent number 170,743
-
Issue date Dec 7, 1875
-
F28 - HEAT EXCHANGE IN GENERAL
-
159074
-
Patent number 159,074
-
Issue date Jan 26, 1875
-
F28 - HEAT EXCHANGE IN GENERAL
-
148516
-
Patent number 148,516
-
Issue date Mar 10, 1874
-
F28 - HEAT EXCHANGE IN GENERAL
-
144650
-
Patent number 144,650
-
Issue date Nov 18, 1873
-
F28 - HEAT EXCHANGE IN GENERAL
-
1571
-
Patent number 1,571
-
Issue date Apr 30, 1840
-
F28 - HEAT EXCHANGE IN GENERAL