HH

Henry T. Hetzel

HP HP: 4 patents #1,237 of 7,018Top 20%
Overall (All Time): #669,052 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5423206 Fluid flow apparatus with capacitive sensors 1995-06-13
5389311 Atmometer covering and method 1995-02-14
5311769 Method and apparatus for automatic measurement of evapotranspiration 1994-05-17
4999820 Hour meter activated by magnetic influence 1991-03-12
4314096 Pre-load apparatus and method for travelling wave digitizer Frank Carau, Michael A. Tremblay 1982-02-02
4301326 Controllable cursor vacuum hold down Michael A. Tremblay 1981-11-17
4255617 Travelling wave digitizer Frank Carau, Michael A. Tremblay 1981-03-10
4194084 Aperture capacitor pickup 1980-03-18