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United States of America Patent
Stats
-
Dec 25, 1990
Grant Date -
N/A
app pub date -
Dec 2, 1988
filing date -
Dec 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plurality of recording electrodes are disposed in parallel form on an elastic metallic thin plate through an insulating layer, a protrusion made of a conductive material is formed in the proximity of the tip of each of recording electrodes, and notched grooves are formed between the recording electrodes to partition the recording electrodes.
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