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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) | Dec. 31, 2025 | Dec. 31, 2024
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Finite-Lived Intangible Assets, Gross Carrying Value | $ 191,040 | $ 191,040
Finite-Lived Intangible Assets, Accumulated Amortization | (191,040) | (171,936)
Finite-Lived Intangible Assets, Net Book Value | 0 | 19,104
Developed Technology Rights [Member] |  |
Finite-Lived Intangible Assets, Gross Carrying Value | 184,100 | 184,100
Finite-Lived Intangible Assets, Accumulated Amortization | (184,100) | (165,690)
Finite-Lived Intangible Assets, Net Book Value | 0 | 18,410
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets, Gross Carrying Value | 1,300 | 1,300
Finite-Lived Intangible Assets, Accumulated Amortization | (1,300) | (1,170)
Finite-Lived Intangible Assets, Net Book Value | 0 | 130
Noncompete Agreements [Member] |  |
Finite-Lived Intangible Assets, Gross Carrying Value | 5,640 | 5,640
Finite-Lived Intangible Assets, Accumulated Amortization | (5,640) | (5,076)
Finite-Lived Intangible Assets, Net Book Value | $ 0 | $ 564

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