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Note 3 - Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

Level 1

  

Level 2

  

Level 3

  

Total

 

Marketable Securities December 31, 2023

  2,976,573   -   -   2,976,573