Masakuni Tokai

Person

  • Hyogo, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Solar-heating system

    • Patent number 4,467,958
    • Issue date Aug 28, 1984
    • Ministry of International Trade and Industry of Japan
    • Masao Yoshiwa
    • F24 - HEATING RANGES VENTILATING