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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Cash Equivalents, at Carrying Value |  |  |  |  | $ 0 | $ 0
Cash, Uninsured Amount | $ 1,745,520 |  | $ 1,745,520 |  |  | 2,813,000
Depreciation | 72,190 | $ 69,127 | 306,092 | $ 223,887 | 299,553 | 208,448
Depreciation, Depletion and Amortization, Nonproduction | $ 72,190 | $ 69,127 | $ 227,606 | $ 202,046 | 274,053 | 208,448
Impairment of Intangible Assets, Finite-Lived |  |  |  |  | 310,173 | 0
Asset Impairment Charges |  |  |  |  | 4,887,297 | 1,524,030
Share-Based Payment Arrangement, Noncash Expense |  |  |  |  | 862,079 | 1,377,379
Amortization of Warrants |  |  |  |  | 925,839 |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Noncash Expense |  |  |  |  | $ 782,081 | 543,332
Share-Based Payment Arrangement, Option [Member] | Minimum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year) |  |  | 6 years |  | 6 years |
Share-Based Payment Arrangement, Option [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year) |  |  | 6 years 6 months |  | 6 years 6 months |
Stock Issued for Services [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Noncash Expense |  |  |  |  | $ 79,998 | 834,047
Amortization of Fair Values of Options [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Noncash Expense |  |  |  |  | 782,081 | $ 543,332
Inventories [Member] |  |  |  |  |  |
Depreciation, Depletion and Amortization, Nonproduction |  |  |  |  | $ 25,500 |

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