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Note 5 - Product Warranties (Tables)
9 Months Ended
Jul. 31, 2025
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   

Nine Months Ended

 
   

July 31,

 
   

2025

   

2024

 

Balance at beginning of period

  $ 65,000     $ 80,000  

Liabilities accrued for warranties issued during the period

    109,520       84,792  

Warranty claims and costs paid during the period

    (45,029 )     (65,994 )

Changes in liability for pre-existing warranties during the period

    (24,491 )     (23,798 )

Balance at end of period

  $ 105,000     $ 75,000