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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
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jun 3, 1986 - •3M attempts clinical trials on multi-channel device •Hard to find patients •Health Ins & otologists difficulties

Added to timeline:

30 Sep 2017
0
0
117
C.I. implants

Date:

jun 3, 1986
Now
~ 32 years ago
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