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Note 6 - Accrued Expenses
9 Months Ended
Aug. 31, 2017
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
6
)
Accrued Expenses
 
Major components of
accrued expenses are:
 
   
August 31, 2017
   
November 30, 2016
 
Salaries, wages, and commissions
  $
518,162
    $
542,449
 
Accrued warranty expense
   
133,194
     
134,373
 
Other
   
382,338
     
342,234
 
    $
1,033,694
    $
1,019,056