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1 jan 1950 ano - Pacemaker

Descrição:

Heart pacemaker was invented in a National Research Council laboratory in Ottawa by Winnipeg native John Hops to keep weak of heart alive and kicking.

Adicionado na linha do tempo:

Relevant History

ByCindy Kilpatrick
7 fev 2020
1
0
1806

Data:

1 jan 1950 ano
Agora
~ 75 years ago
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