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Note 11 - Capital Stock (Tables)
3 Months Ended
Oct. 31, 2023
Notes Tables  
Schedule Of Share based Compensation Warrants Activity [Table Text Block]
  

Number of

  

Weighted Average

 
  

Warrants

  

Exercise Price

 

Balance, July 31, 2023

  3,857,030  $3.31 

Balance, October 31, 2023

  3,857,030   3.31 
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
    

Number of

  

Weighted Average Remaining

  

Weighted Average

  

Warrants

  

Contractual

  

Exercise Price

  

Outstanding

  

Life (Years)

 

Expiry Date

$3.27   3,675,212   0.85 

September 7, 2024

 4.13   181,818   2.43 

April 5, 2026

$3.31   3,857,030   0.93