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Note 5 - Property, Plant, and Equipment (Tables)
12 Months Ended
Nov. 30, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
November 30, 2020
   
November 30, 2019
 
Land
  $
220,503
    $
220,503
 
Buildings and improvements
   
7,255,955
     
7,035,144
 
Construction in Progress
   
31,571
     
82,366
 
Manufacturing machinery and equipment
   
11,123,104
     
11,036,192
 
Trucks and automobiles
   
510,955
     
507,575
 
Furniture and fixtures
   
119,907
     
120,833
 
     
19,261,995
     
19,002,613
 
Less accumulated depreciation
   
(14,043,333
)    
(13,639,706
)
Property, plant and equipment
  $
5,218,662
    $
5,362,907