Corrugated sheet

Patents Grantslast 30 patents

  • Information Patent Grant

    3907032

    • Patent number 3,907,032
    • Issue date Sep 23, 1975
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3702632

    • Patent number 3,702,632
    • Issue date Nov 14, 1972
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3262495

    • Patent number 3,262,495
    • Issue date Jul 26, 1966
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3045979

    • Patent number 3,045,979
    • Issue date Jul 24, 1962
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1906077

    • Patent number 1,906,077
    • Issue date Apr 25, 1933
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1726360

    • Patent number 1,726,360
    • Issue date Aug 27, 1929
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1548591

    • Patent number 1,548,591
    • Issue date Aug 4, 1925
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1468686

    • Patent number 1,468,686
    • Issue date Sep 25, 1923
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1458128

    • Patent number 1,458,128
    • Issue date Jun 12, 1923
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1380132

    • Patent number 1,380,132
    • Issue date May 31, 1921
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1313492

    • Patent number 1,313,492
    • Issue date Aug 19, 1919
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1239491

    • Patent number 1,239,491
    • Issue date Sep 11, 1917
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    966721

    • Patent number 966,721
    • Issue date Aug 9, 1910
    • F28 - HEAT EXCHANGE IN GENERAL