Air draft passage confined entirely by heat transfer surface

Patents Grantslast 30 patents

  • Information Patent Grant

    1763754

    • Patent number 1,763,754
    • Issue date Jun 17, 1930
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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    1731807

    • Patent number 1,731,807
    • Issue date Oct 15, 1929
    • F24 - HEATING RANGES VENTILATING
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    1328540

    • Patent number 1,328,540
    • Issue date Jan 20, 1920
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    1032964

    • Patent number 1,032,964
    • Issue date Jul 16, 1912
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    895052

    • Patent number 895,052
    • Issue date Aug 4, 1908
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    598551

    • Patent number 598,551
    • Issue date Feb 8, 1898
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    502999

    • Patent number 502,999
    • Issue date Aug 8, 1893
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    474656

    • Patent number 474,656
    • Issue date May 10, 1892
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    459413

    • Patent number 459,413
    • Issue date Sep 15, 1891
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    355616

    • Patent number 355,616
    • Issue date Jan 4, 1887
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    227517

    • Patent number 227,517
    • Issue date May 11, 1880
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    210627

    • Patent number 210,627
    • Issue date Dec 10, 1878
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    173581

    • Patent number 173,581
    • Issue date Feb 15, 1876
    • F28 - HEAT EXCHANGE IN GENERAL