Quarterly report pursuant to Section 13 or 15(d)

Note 4 ??? Inventories (Tables)

v3.22.2.2
Note 4 – Inventories (Tables)
 3 Months Ended
Jul. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
    July 31, 2022   April 30, 2022
Raw materials   $ 2,396,265     $ 2,831,713  
Work-in-process     524,811       173,112  
Finished goods     1,663,760       891,045  
Total   $ 4,584,836     $ 3,895,870