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Note 3 – Divestiture of Consumer Segment (Tables)
 3 Months Ended
Jul. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]  
Disposal Groups, Including Discontinued Operations [Table Text Block]
       
  

Three months ended

July 31

   2024  2023
Revenues  $—     $1,869,219 
           
Cost of goods sold   —      1,385,116 
           
Gross Profit   —      484,103 
           
Operating Expenses          
Research and development   —      46,249 
Sales and marketing   —      404,104 
General and administrative   —      253,586 
Total operating expenses   —      703,939 
Operating loss   —      (219,836)
           
Other expense (income)          
Interest expense   —      22,856 
Other, net   —      (119)
Other expense   —      22,737 
           
Net loss from discontinued operations  $—     $(242,573)