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Note 5 – Other Current Assets (Tables)
12 Months Ended
Apr. 30, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Current Assets [Table Text Block]
   2023  2022
Prepaid inventory  $2,421,538   $1,707,085 
Accrued interest income   151,671    385,730 
Prepaid expenses   759,964    262,069 
Total  $3,333,173   $2,354,884