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Sales Tax, Tax Credits and Other Receivables (Tables)
9 Months Ended
Nov. 30, 2019
Receivables [Abstract]  
Sales tax, tax credits and other receivables
   

November 30,

2019

   

February 28,

2019

 
Sales tax   $ 196,065     $ 82,992  
Research and development tax credits     396,123       410,997  
Other receivables     39,248       105,011  
    $ 631,436     $ 599,000