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Note 6 - Stock Purchase Warrants (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Description

 

December 31,

2022

  

December 31,

2021

 
         

2018 Convertible Notes warrants

  -   233,333 

2022 Sales incentive warrants

  450,000   - 
         

Total

  450,000   233,333