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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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26 agos 1977 anni - zinc-air battery

Descrizione:

A mercury free battery introduced to have a greater capacity when it come to volume since the amount of mercury has depleted. Was a major part of the incoming technology of hearing aids with much credibility.

Aggiunto al nastro di tempo:

Deaf Technology 1960s-2017

ByBlanche Padecio
13 dic 2017
0
0
533

Data:

26 agos 1977 anni
Adesso
~ 48 years ago
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