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Note 8 – Property and Equipment (Tables)
6 Months Ended
Oct. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
   October 31, 2022  April 30, 2022
Equipment and related  $1,003,488   $509,376 
Leasehold improvements   930,986    149,330 
Furniture and fixtures   54,254    42,746 
Accumulated depreciation   (287,907)   (189,762)
Net carrying value  $1,700,821   $511,690