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Note 5 - Product Warranties (Tables)
6 Months Ended
Apr. 30, 2025
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   

Six Months Ended

 
   

April 30,

 
   

2025

   

2024

 

Balance at beginning of period

  $ 65,000     $ 80,000  

Liabilities accrued for warranties issued during the period

    64,498       73,342  

Warranty claims and costs paid during the period

    (31,941 )     (56,842 )

Changes in liability for pre-existing warranties during the period

    (32,557 )     (21,500 )

Balance at end of period

  $ 65,000     $ 75,000