having hollow blade

Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary heat exchanger

    • Patent number 4,986,345
    • Issue date Jan 22, 1991
    • Nissan Motor Co., Ltd.
    • Masakazu Uemura
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Heat exchanger

    • Patent number 4,960,168
    • Issue date Oct 2, 1990
    • Raymond L. Anderson
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Heat exchanger

    • Patent number 3,989,101
    • Issue date Nov 2, 1976
    • Frank A. Manfredi
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3908754

    • Patent number 3,908,754
    • Issue date Sep 30, 1975
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3835921

    • Patent number 3,835,921
    • Issue date Sep 17, 1974
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3688836

    • Patent number 3,688,836
    • Issue date Sep 5, 1972
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3477499

    • Patent number 3,477,499
    • Issue date Nov 11, 1969
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3387651

    • Patent number 3,387,651
    • Issue date Jun 11, 1968
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3295597

    • Patent number 3,295,597
    • Issue date Jan 3, 1967
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3260306

    • Patent number 3,260,306
    • Issue date Jul 12, 1966
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3253649

    • Patent number 3,253,649
    • Issue date May 31, 1966
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3232339

    • Patent number 3,232,339
    • Issue date Feb 1, 1966
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    3020025

    • Patent number 3,020,025
    • Issue date Feb 6, 1962
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1903471

    • Patent number 1,903,471
    • Issue date Apr 4, 1933
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1869855

    • Patent number 1,869,855
    • Issue date Aug 2, 1932
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    1858226

    • Patent number 1,858,226
    • Issue date May 10, 1932
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1850378

    • Patent number 1,850,378
    • Issue date Mar 22, 1932
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    947424

    • Patent number 947,424
    • Issue date Jan 25, 1910
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    702994

    • Patent number 702,994
    • Issue date Jun 24, 1902
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL