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Note 6 - Inventory (Tables)
9 Months Ended
Jan. 31, 2025
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

January 31, 2025

  

April 30, 2024

 

Parts and raw material

 $6,533  $6,111 

Work in process

  

3,759

   3,349 

Finished goods

  76   62 

Total Inventory, net of allowance

 $10,368  $9,522