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Note 7 - Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | 2023 |  |  | 2022 |
Customer relationships |  | $ | 489,273 |  |  | $ | 473,308 |
Patent cost |  |  | 183,874 |  |  |  | 177,875 |
|  |  | 673,148 |  |  |  | 651,183 |
Less Accumulated amortization |  |  | (558,555 | ) |  |  | (438,250 | )
Intangible assets, net |  | $ | 114,593 |  |  | $ | 212,933 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year ending December 31, |  | Amortization Expenses |
2024 |  |  | 72,902 |
2025 |  |  | 7,665 |
2026 |  |  | 7,665 |
2027 |  |  | 7,665 |
2028 |  |  | 7,665 |
Thereafter |  |  | 11,031 |
|  | $ | 114,593 |

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