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Inventories
12 Months Ended
Jul. 31, 2021
Inventory Disclosure [Abstract]  
Inventories

Note 5 - Inventories

 

Inventories consisted of the following at July 31:

   2021   2020 
Raw materials  $1,062   $1,019 
Work in process   2,534    2,587 
Finished products   9,056    4,178 
   $12,652   $7,784