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Note 8 - Accrued Expenses
12 Months Ended
Nov. 30, 2019
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
(
8
)
Accrued Expenses
 
Major components of accrued expenses are:
 
   
November 30, 2019
   
November 30, 2018
 
Salaries, wages, and commissions
  $
555,201
    $
448,737
 
Accrued warranty expense
   
203,185
     
96,786
 
Other
   
374,440
     
347,761
 
    $
1,132,826
    $
893,284