TREA

Climbing elements

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Industry

  • CPC
  • B28B21/566
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B28Stoneworking B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL B28B21/00Methods or machines specially adapted for the production of tubular articles

Current Industry

B28B21/566Climbing elements
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Manhole insert for manufacture of a cast member and to provide a st...
    • Patent number 7,108,101
    • Issue date Sep 19, 2006
    • Poly-Tec Products, Inc.
    • James A. Westhoff
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Core segment for concrete forming apparatus
    • Patent number 4,618,122
    • Issue date Oct 21, 1986
    • Georg Prinzing GmbH & Co. KG Betonformen- Und Maschinenfabrik
    • Richard Kraiss
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Moulding apparatus for shaping concrete parts
    • Patent number 4,610,422
    • Issue date Sep 9, 1986
    • Georg Prinzing GmbH & Co. KG Betonformen- Und Maschinenfabrik
    • Richard Kraiss
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method and apparatus for forming concrete articles containing one o...
    • Patent number 4,588,544
    • Issue date May 13, 1986
    • Georg Prinzing GmbH & Co. KG Betonformen- and Maschinenfabrik
    • Richard Kraiss
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Step driver
    • Patent number 4,428,522
    • Issue date Jan 31, 1984
    • Concrete Pipe & Products Corp.
    • Robert C. Buttner
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method of installing manhole safety steps and plugs therefor
    • Patent number 4,241,543
    • Issue date Dec 30, 1980
    • Anthony Foscarini
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Ladder rung implanter
    • Patent number 4,075,272
    • Issue date Feb 21, 1978
    • Edward P. Washabaugh
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Ladder rung implanter
    • Patent number 3,989,177
    • Issue date Nov 2, 1976
    • Edward P. Washabaugh
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Apparatus for forming steps in manholes and the like
    • Patent number 3,974,615
    • Issue date Aug 17, 1976
    • A-Lok Corporation
    • John Ditcher
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3806297
    • Patent number 3,806,297
    • Issue date Apr 23, 1974
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3415482
    • Patent number 3,415,482
    • Issue date Dec 10, 1968
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3142882
    • Patent number 3,142,882
    • Issue date Aug 4, 1964
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1555878
    • Patent number 1,555,878
    • Issue date Oct 6, 1925
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1315805
    • Patent number 1,315,805
    • Issue date Sep 9, 1919
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1186554
    • Patent number 1,186,554
    • Issue date Jun 13, 1916
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1146397
    • Patent number 1,146,397
    • Issue date Jul 13, 1915
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1109753
    • Patent number 1,109,753
    • Issue date Sep 8, 1914
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1017026
    • Patent number 1,017,026
    • Issue date Feb 13, 1912
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1015706
    • Patent number 1,015,706
    • Issue date Jan 23, 1912
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    992311
    • Patent number 992,311
    • Issue date May 16, 1911
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    977345
    • Patent number 977,345
    • Issue date Nov 29, 1910
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    974372
    • Patent number 974,372
    • Issue date Nov 1, 1910
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    970904
    • Patent number 970,904
    • Issue date Sep 20, 1910
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    951753
    • Patent number 951,753
    • Issue date Mar 8, 1910
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    949091
    • Patent number 949,091
    • Issue date Feb 15, 1910
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    937793
    • Patent number 937,793
    • Issue date Oct 26, 1909
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    887206
    • Patent number 887,206
    • Issue date May 12, 1908
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    884502
    • Patent number 884,502
    • Issue date Apr 14, 1908
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    838737
    • Patent number 838,737
    • Issue date Dec 18, 1906
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    832594
    • Patent number 832,594
    • Issue date Oct 9, 1906
    • B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents