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Inventory
3 Months Ended
Jul. 31, 2022
Inventory Disclosure [Abstract]  
Inventory

(4) Inventory

 

The Company holds inventory related to the production of its WAM-V® and PowerBuoy® products.

           
   July 31, 2022   April 30, 2022 
   (in thousands) 
Raw Materials  $343   $198 
Work in Process   245    244 
Inventory, net  $588   $442