Heating directly by circulation of a fluid other than a gas or by particles

Patents Grantslast 30 patents

  • Information Patent Grant

    Gas levitator having fixed levitation node for containerless proces...

    • Patent number 4,378,209
    • Issue date Mar 29, 1983
    • The United States of America as represented by the administrator of the Natio...
    • Leroy H. Berge
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    1937413

    • Patent number 1,937,413
    • Issue date Nov 28, 1933
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    1731457

    • Patent number 1,731,457
    • Issue date Oct 15, 1929
    • F27 - FURNACES KILNS OVENS RETORTS

Patents Applicationslast 30 patents