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Note 3 - Intangibles (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]

 

 

September 30,

   

December 31,

 

Patents

 

2022

   

2021

 

Gross Carrying Amount

  $ 1,400,000     $ 1,400,000  

Accumulated Amortization

    (481,375 )     (421,203 )
    $ 918,625     $ 978,797