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Note H - Patents (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
| December 31, 2019 |
| Cost |  |  | Impairment |  |  | Accumulated Amortization |  |  | Net |
Patents-foundation intellectual property | $ | 1,377,863 |  |  | $ | - |  |  | $ | (995,603 | ) |  | $ | 382,260 |
Total | $ | 1,377,863 |  |  | $ | - |  |  | $ | (995,603 | ) |  | $ | 382,260 |
| December 31, 2018 |
| Cost |  |  | Impairment |  |  | Accumulated Amortization |  |  | Net |
Patents-foundation intellectual property | $ | 1,377,863 |  |  | $ | - |  |  | $ | (942,590 | ) |  | $ | 435,273 |
Epidural-Apad acquired patents |  | 2,639,647 |  |  |  | (1,539,794 | ) |  |  | (1,099,853 | ) |  |  | - |
Total | $ | 4,017,510 |  |  | $ | (1,539,794 | ) |  | $ | (2,042,443 | ) |  | $ | 435,273 |

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