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Note 7 - Intangible Assets - Expected Future Amortization Expense (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
2023 $ 102,077  
2024 70,523  
2025 7,415  
2026 7,415  
2027 7,415  
Thereafter 18,088  
Intangible assets, net $ 212,933 $ 334,743