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Inventories
6 Months Ended
Jan. 31, 2021
Inventory Disclosure [Abstract]  
Inventories

 Note 5 – Inventories


Inventories consist of the following at January 31:


   January 31,
2021
   July 31,
2020
 
Raw materials  $1,266   $1,019 
Work in process   2,561    2,587 
Finished products   5,431    4,178 
   $9,258   $7,784