into moulds having sliding parts

Patents Grantslast 30 patents

  • Information Patent Grant

    Concrete tube and formwork device and method for producing such a c...

    • Patent number 11,938,651
    • Issue date Mar 26, 2024
    • Peri SE
    • Werner Brunner
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method and apparatus for producing molded tubular objects from poly...

    • Patent number 6,340,442
    • Issue date Jan 22, 2002
    • iloma Automatisierungstechnik GmbH
    • Manfred Brokmann
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Packerhead and core control system

    • Patent number 4,253,814
    • Issue date Mar 3, 1981
    • Hydrotile Canada Limited
    • Alfred W. Christian
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method of making concrete pipe

    • Patent number 4,039,642
    • Issue date Aug 2, 1977
    • Harry Steiro
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3788793

    • Patent number 3,788,793
    • Issue date Jan 29, 1974
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3773447

    • Patent number 3,773,447
    • Issue date Nov 20, 1973
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3752626

    • Patent number 3,752,626
    • Issue date Aug 14, 1973
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3276092

    • Patent number 3,276,092
    • Issue date Oct 4, 1966
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3150428

    • Patent number 3,150,428
    • Issue date Sep 29, 1964
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3103729

    • Patent number 3,103,729
    • Issue date Sep 17, 1963
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3069744

    • Patent number 3,069,744
    • Issue date Dec 25, 1962
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3047928

    • Patent number 3,047,928
    • Issue date Aug 7, 1962
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2966716

    • Patent number 2,966,716
    • Issue date Jan 3, 1961
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2948042

    • Patent number 2,948,042
    • Issue date Aug 9, 1960
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2937429

    • Patent number 2,937,429
    • Issue date May 24, 1960
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2878544

    • Patent number 2,878,544
    • Issue date Mar 24, 1959
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2786252

    • Patent number 2,786,252
    • Issue date Mar 26, 1957
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2544453

    • Patent number 2,544,453
    • Issue date Mar 6, 1951
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1941812

    • Patent number 1,941,812
    • Issue date Jan 2, 1934
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1875738

    • Patent number 1,875,738
    • Issue date Sep 6, 1932
    • B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents