made of concrete, cement or asbestos-cement

Patents Grantslast 30 patents

  • Information Patent Grant

    Ceramic-backed elbow and coating system and method

    • Patent number 11,079,056
    • Issue date Aug 3, 2021
    • Progressive Products, Inc.
    • Todd N. Allison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Erosion resistant flow conduit

    • Patent number 9,695,661
    • Issue date Jul 4, 2017
    • Specialized Desanders Inc.
    • Christopher A. Hemstock
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Elbow for conveying particulate matter

    • Patent number 6,073,658
    • Issue date Jun 13, 2000
    • General Electric Company
    • Robert E. Bailey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe bend

    • Patent number 5,984,374
    • Issue date Nov 16, 1999
    • Esser-Werke GmbH
    • Alexander Esser
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    3815641

    • Patent number 3,815,641
    • Issue date Jun 11, 1974
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    3752438

    • Patent number 3,752,438
    • Issue date Aug 14, 1973
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    Pipe Bend, and Method of Making a Pipe Bend

    • Publication number 20080191470
    • Publication date Aug 14, 2008
    • ESSER-WERKE GMBH & CO. KG
    • Alexander Esser
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    ABRASION-RESISTANT CERAMIC ELBOW

    • Publication number 20080169642
    • Publication date Jul 17, 2008
    • Changgui YANG
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL