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Note 3 - Intangible Assets - Estimated Future Amortization (Details) - USD ($)
Jun. 30, 2025
Sep. 30, 2024
September 30, 2025 $ 25,293  
September 30, 2026 101,172  
September 30, 2027 101,172  
September 30, 2028 101,172  
September 30, 2029 101,172  
Thereafter 1,572,988  
Total intangible assets, net $ 2,002,969 $ 2,078,848