with driven dust-loosening tools

Industry

  • CPC
  • A47L5/05
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Patents Grantslast 30 patents

  • Information Patent Grant

    1384998

    • Patent number 1,384,998
    • Issue date Jul 19, 1921
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    1339280

    • Patent number 1,339,280
    • Issue date May 4, 1920
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    1332432

    • Patent number 1,332,432
    • Issue date Mar 2, 1920
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...