-
3194307
-
Patent number 3,194,307
-
Issue date Jul 13, 1965
-
F24 - HEATING RANGES VENTILATING
-
2517489
-
Patent number 2,517,489
-
Issue date Aug 1, 1950
-
F22 - STEAM GENERATION
-
1980077
-
Patent number 1,980,077
-
Issue date Nov 6, 1934
-
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
-
849071
-
Patent number 849,071
-
Issue date Apr 2, 1907
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
-
700373
-
Patent number 700,373
-
Issue date May 20, 1902
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL