Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1994-10-31
1996-06-18
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324717, 324 711, 235441, 235492, G01R 2708, G06K 706
Patent
active
055281540
ABSTRACT:
A method and an apparatus to electronically identify a page. Each page has a surface conductive trace that is coupled to an electronic circuit to measure the conductivity of the trace. The primary purpose of the conductive trace is to provide an identification for the page.
REFERENCES:
patent: 3699311 (1972-10-01), Dunbar
patent: 3757305 (1973-09-01), Hedin
patent: 3906201 (1975-09-01), Housman et al.
patent: 3928750 (1975-12-01), Wolflingseder
patent: 3934120 (1976-01-01), Maymarev
patent: 4044229 (1977-08-01), Samreus
Leichner Robert C.
Lin An-Chung R.
Do Diep
Hewlett--Packard Company
Wieder Kenneth A.
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