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jan 18, 1986 - •3M applies for FDA PMA on multi-channel •FDA directs 3M to have 100 patients •3M draws down on C.I. development, focus on hearing aids
Added to timeline:
C.I. implants
By
Max
30 Sep 2017
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0
557
Date:
jan 18, 1986
Now
~ 40 years ago
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