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Note 6 – Intangible Assets (Tables)
3 Months Ended
Jul. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill [Table Text Block]
                      
   July 31, 2024  April 30, 2024
   Gross Value  Accumulated Amortization  Net Value 

Gross

Value

  Accumulated Amortization  Net Value
Proprietary technology  $4,282,001   $(2,094,941)  $2,187,060   $4,282,001   $(1,917,612)  $2,364,389 
Non-compete agreements   65,000    (65,000)         65,000    (65,000)      
Total finite-lived assets   4,347,001    (2,159,941)   2,187,060    4,347,001    (1,982,612)   2,364,389 
Brand name   1,430,000          1,430,000    1,430,000          1,430,000 
Total indefinite-lived assets   1,430,000          1,430,000    1,430,000          1,430,000 
Total intangible assets, net  $5,777,001   $(2,159,941)  $3,617,060   $5,777,001   $(1,982,612)  $3,794,389