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Note 8 - Investments in Equity Securities (Tables)
3 Months Ended
Oct. 31, 2024
Notes Tables  
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]

Balance, July 31, 2024

 $75,264 

Sale of investment in publicly listed companies

  (54,372)

Fair value loss on equity securities

  (10,349)

Foreign exchange difference

  (2)

Balance, October 31, 2024

 $10,541