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Note 9 - Product Warranty (Tables)
12 Months Ended
Nov. 30, 2024
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
  

For the Twelve Months Ended

 
  

November 30, 2024

  

November 30, 2023

 

Balance, beginning

 $295,113  $192,301 

Settlements / adjustments

  (400,739)  (330,951)

Warranties issued

  330,812   433,763 

Balance, ending

 $225,186  $295,113