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Jeffrey H. Hoffman

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  • Two Rivers, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Edge-encapsulated writing board
    • Patent number 5,727,952
    • Issue date Mar 17, 1998
    • Classic Modular Systems, Inc.
    • Robert Schenck
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Damper control apparatus
    • Patent number 5,382,192
    • Issue date Jan 17, 1995
    • Classic Modular Systems, Inc.
    • Jeffrey H. Hoffman
    • B08 - CLEANING
  • Information Patent Grant

    Sash counterbalance leveling device
    • Patent number 5,216,782
    • Issue date Jun 8, 1993
    • Classic Modular Systems, Inc.
    • Robert Schenck
    • B08 - CLEANING
  • Information Patent Grant

    Working surface
    • Patent number 5,018,628
    • Issue date May 28, 1991
    • Classic Modular Systems, Inc.
    • Robert Schenck
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...