Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2007-07-03
2007-07-03
Hirshfeld, Andrew H. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S690000, C324S347000, C324S640000
Reexamination Certificate
active
10808838
ABSTRACT:
This disclosure describes a Soil Penetrating Electrode with Conical Taper for use with instrumentation for measurement of the electrical properties of soil in situ. The Electrode shape and configuration solves problems of stable and reliable contact with the soil, repeatable contact area, and ease of use by the operator.
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patent: 5479104 (1995-12-01), Cambell
patent: 6401742 (2002-06-01), Cramer et al.
patent: 6404203 (2002-06-01), Lagmanson
patent: 6536263 (2003-03-01), Wood et al.
patent: 6615653 (2003-09-01), Hocking
Hirshfeld Andrew H.
Zhu John
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