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Inventories
12 Months Ended
Jul. 31, 2020
Inventory Disclosure [Abstract]  
Inventories

Note 5 - Inventories


Inventories consisted of the following at July 31:


   2020   2019 
Raw materials  $1,019   $876 
Work in process   2,587    2,566 
Finished products   4,178    4,400 
   $7,784   $7,842