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Note 8 - Net Loss Per Share (Tables)
 3 Months Ended
Jan. 31, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three months ended
 
   
January 31,
  
   
2018
    
2017
  
Net loss (numerator)
   $
(410,135
 )   $
(615,767
 )
                 
Shares (denominator)
    
6,667,595
      
6,486,739
  
                 
Basic and diluted net loss per share
   $
(0.06
 )   $
(0.09
 )