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Note 15 - Net Loss Per Share (Tables)
 12 Months Ended
Jul. 31, 2021
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Year Ended July 31,
  
   
2021
    
2020
  
Numerator
  
 
 
 
  
 
 
 
Net Loss for the Year
  
$
(14,813,810
)
   $
(14,610,516
 )
                 
Denominator
  
 
 
 
  
 
 
 
Basic Weighted Average Number of Shares
  
 
210,295,992
      
183,041,766
  
Dilutive Stock Options, RSUs, PRSUs and Warrants
  
 
-
      
-
  
Diluted Weighted Average Number of Shares
  
 
210,295,992
      
183,041,766
  
                 
Net Loss per Share, Basic and Diluted
  
$
(0.07
)
   $
(0.08
 )