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Note 7 - Inventories (Tables)
9 Months Ended
Sep. 25, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

September 25,

   

December 26,

 
   

2021

   

2020

 

Raw materials

  $ 1,312,313     $ 752,760  

Work in process

    2,068,812       2,800,226  

Finished goods

    775,129       592,640  

Total inventory

    4,156,254       4,145,626  
                 

Reserve for obsolescence

    (383,026)       (436,155)  

Inventories, net

  $ 3,773,228     $ 3,709,471