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COVID-19: Kolkata scientist invents pocket ventilator
Updated : 4 years, 11 months ago IST
Kolkata (West Bengal) [India], June 15 (ANI): Amid the second wave of the COVID-19 pandemc, Kolkata-based Scientist Dr Ramendra Lal Mukherjee, an engineer by profession has invented a highly portable battery operated ventilor which can be used by people who suffer from breathing problem,
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