Daniel O. Hayes

3 Patents

• US124926962025

  Inline Landfill Pump Cycle Counter

  Graco Minnesota Inc.

  0 cites
• US124427242025

  Soil Sampler

  Q.E.D. Environmental Systems, Inc.

  0 cites
• USD10803282025

  Soil Sampler Tool

  Q.E.D. ENVIRONMENTAL SYSTEMS, Inc.

  0 cites