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Note 7 - Accrued Expenses
3 Months Ended
Feb. 28, 2021
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
 
7
)
Accrued Expenses
 
Major components of accrued expenses are:
 
   
February 28, 2021
   
November 30, 2020
 
Salaries, wages, and commissions
  $
683,180
    $
726,625
 
Accrued warranty expense
   
295,581
     
291,454
 
Other
   
219,424
     
261,233
 
    $
1,198,185
    $
1,279,312