Cold cathode
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United States of America Patent
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Nov 16, 2004
Issued Date -
N/A
app pub date -
Dec 11, 2003
filing date -
Oct 16, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.
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