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Note 7 - Patents - Summary of Patents (Details) - USD ($) | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Patents, cost | $ 1,377,863 | $ 1,377,863
Patents, accumulated amortization | (1,140,227) | (1,100,244)
Patents-foundation intellectual property | 237,636 | 277,619
Foundation Intellectual Property Patents [Member] |  |
Patents, cost | 1,377,863 | 1,377,863
Patents, accumulated amortization | (1,140,227) | (1,100,244)
Patents-foundation intellectual property | $ 237,636 | $ 277,619

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