US1994080A
|
|
Refrigeration
|
US1993764A
|
|
Refrigeration
|
US1974728A
|
|
Refrigeration
|
US1980449A
|
|
Fluid fuel burner
|
US1958573A
|
|
Refrigeration
|
US1949637A
|
|
Absorption refrigeration apparatus
|
US1974731A
|
|
Control device for fluid fuel burners
|
US2010408A
|
|
Refrigerating system
|
US1976202A
|
|
Absorption type refrigerating system
|
US2008343A
|
|
Cooling element for refrigerating systems
|
US1973127A
|
|
Cooling element for refrigerating systems
|
US1961325A
|
|
Automatic burner control valve
|
US1986638A
|
|
Absorption refrigerating apparatus
|
US1955298A
|
|
Absorption refrigerating apparatus
|
US1908901A
|
|
Absorption type refrigerating apparatus
|
US1946467A
|
|
Condenser for refrigerating apparatus
|
US1961324A
|
|
Gas valve
|
US1882026A
|
|
Fluid heat transfer system
|
US2001797A
|
|
Refrigeration
|
US1950148A
|
|
Control of fluid circulation
|