Cleaning devices

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for cleaning tee forms

    • Patent number 4,578,837
    • Issue date Apr 1, 1986
    • Hamilton Equipment Company, Inc.
    • Edward P. Baer
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3849820

    • Patent number 3,849,820
    • Issue date Nov 26, 1974
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    3835534

    • Patent number 3,835,534
    • Issue date Sep 17, 1974
    • E04 - BUILDING
  • Information Patent Grant

    3625181

    • Patent number 3,625,181
    • Issue date Dec 7, 1971
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3222820

    • Patent number 3,222,820
    • Issue date Dec 14, 1965
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3110050

    • Patent number 3,110,050
    • Issue date Nov 12, 1963
    • E04 - BUILDING
  • Information Patent Grant

    3083388

    • Patent number 3,083,388
    • Issue date Apr 2, 1963
    • E04 - BUILDING
  • Information Patent Grant

    3035539

    • Patent number 3,035,539
    • Issue date May 22, 1962
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    2835909

    • Patent number 2,835,909
    • Issue date May 27, 1958
    • E04 - BUILDING
  • Information Patent Grant

    2632939

    • Patent number 2,632,939
    • Issue date Mar 31, 1953
    • E04 - BUILDING
  • Information Patent Grant

    1695023

    • Patent number 1,695,023
    • Issue date Dec 11, 1928
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1475371

    • Patent number 1,475,371
    • Issue date Nov 27, 1923
    • E04 - BUILDING
  • Information Patent Grant

    1443426

    • Patent number 1,443,426
    • Issue date Jan 30, 1923
    • E04 - BUILDING
  • Information Patent Grant

    1390218

    • Patent number 1,390,218
    • Issue date Sep 6, 1921
    • E04 - BUILDING

Patents Applicationslast 30 patents