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Loss per share (Tables)
12 Months Ended
Oct. 31, 2017
Earnings per share [abstract]  
Disclosure of detailed information about basic and diluted loss per share [Table Text Block]
Numerator   2019     2018     2017  
Loss attributable to common shareholders $ (2,832,864 ) $ (2,362,239 ) $ (4,346,200 )
Loss used in computation of basic and diluted loss per $ (2,832,864 ) $ (2,362,239 ) $ (4,346,200 )
                   
Denominator   2019     2018     2017  
Weighted average number of common shares for computation of basic and diluted loss per share   288,398,051     237,242,674     207,131,781