-
Solenoid valve
-
Patent number 4,546,795
-
Issue date Oct 15, 1985
-
Hitachi, Ltd.
-
Yoshio Okamoto
-
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
-
Combustion apparatus
-
Patent number 4,474,551
-
Issue date Oct 2, 1984
-
Hitachi, Ltd.
-
Kazumi Iwai
-
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
-
Combustion apparatus
-
Patent number 4,329,139
-
Issue date May 11, 1982
-
Hitachi, Ltd.
-
Tadashi Shinozaki
-
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES