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Share Based Awards (Tables)
6 Months Ended
Oct. 31, 2020
Share-based Payment Arrangement [Abstract]  
Stock compensation expense
  3 months   6 months
       
General and administrative  $94,629   $189,258 
Research and development   9,945    19,890 
Operations   2,487    4,974 
   $107,061   $214,122