Darrell V. Nieschwitz

6 Patents

• US122568862025

  Vacuum Inlet Valve Assembly with Sliding Pins

  H-P PRODUCTS, Inc.

  0 cites
• US121783822024

  Central Vacuum System and Inlet Valves Therefor

  H-P Products, Inc.

  0 cites
• US120165172024

  Adapter for a Vacuum Hose

  H-P PRODUCTS, Inc.

  0 cites
• US119035532024

  Vacuum Hose Having an Integrated Switch

  H-P PRODUCTS, Inc.

  0 cites
• US118961872024

  Central Vacuum System and Inlet Valves Therefor

  H-P PRODUCTS, Inc.

  0 cites
• US117071742023

  Vacuum Inlet Valve Assembly with Sliding Pins

  H-P PRODUCTS, Inc.

  0 cites