Henry T. Hetzel

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Loveland, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Fluid flow apparatus with capacitive sensors
- Patent number 5,423,206
- Issue date Jun 13, 1995
- Henry T. Hetzel
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for automatic measurement of evapotranspiration
- Patent number 5,311,769
- Issue date May 17, 1994
- Henry T. Hetzel
- G01 - MEASURING TESTING
Information Patent Grant
Hour meter activated by magnetic influence
- Patent number 4,999,820
- Issue date Mar 12, 1991
- Henry T. Hetzel
- G07 - CHECKING-DEVICES
Information Patent Grant
Pre-load apparatus and method for travelling wave digitizer
- Patent number 4,314,096
- Issue date Feb 2, 1982
- Hewlett-Packard Company
- Frank P. Carau
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Controllable cursor vacuum hold down
- Patent number 4,301,326
- Issue date Nov 17, 1981
- Hewlett-Packard Company
- Henry T. Hetzel
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Travelling wave digitizer
- Patent number 4,255,617
- Issue date Mar 10, 1981
- Hewlett-Packard Company
- Frank P. Carau
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Aperture capacitor pickup
- Patent number 4,194,084
- Issue date Mar 18, 1980
- Hewlett-Packard Company
- Henry T. Hetzel
- G06 - COMPUTING CALCULATING COUNTING