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Note 6 - Product Warranties (Tables)
12 Months Ended
Oct. 31, 2025
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   

Years ended October 31,

 
   

2025

   

2024

 

Balance at beginning of year

  $ 65,000     $ 80,000  

Liabilities accrued for warranties issued during the year

    140,157       83,000  

Warranty claims paid during the period

    (69,935 )     (76,465 )

Changes in liability for pre-existing warranties during the year

    (35,222 )     (21,535 )

Balance at end of year

  $ 100,000     $ 65,000