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Note 7 - Accrued Expenses (Tables)
6 Months Ended
May 31, 2022
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
   

May 31, 2022

   

November 30, 2021

 

Salaries, wages, and commissions

  $ 626,179     $ 654,757  

Accrued warranty expense

    89,549       202,850  

Other

    267,231       304,766  
    $ 982,959     $ 1,162,373