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

(4) Inventories

          
Inventories consisted of the following:  2021  2020
Raw materials  $2,554,083   $2,155,664 
Work in process   1,714,957    1,725,596 
Finished goods   439,223    373,620 
  Inventories  $4,708,263   $4,254,880