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PROXIMITY DETECTING APPARATUS
US 3,422,415 A
Filed
: 12/20/1965
Issued
: 01/14/1969
Est. Priority Date
: 12/20/1965
Status: Expired due to Term
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7 Citations
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Current Assignee
Ichimori Masuo
Original Assignee
Ichimori Masuo
Inventors
ICHIMORI MASUO
Application Number
US04/514,913
Time in Patent Office
1,121 Days
Field of Search
US Class Current
340/562
CPC Class Codes
G01F 23/265
for discrete levels
H03K 17/955
using a capacitive detector
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