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Note 7 - Inventories (Tables)
6 Months Ended
Jun. 26, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 26,

  

December , 26

 
  

2021

  

2020

 
         

Raw materials

 $1,363,413  $752,760 

Work in process

  2,203,222   2,800,226 

Finished goods

  858,955   592,640 
         

Total inventory

  4,425,590   4,145,626 

Reserve for obsolescence

  (436,155)  (436,155)
         

Inventories, net

 $3,989,435  $3,709,471