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15. Stock Options (Details-Option activity) - Stock Options [Member] - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Stock Options |  |
Number of Options outstanding beginning balance | 1,289,866 |
Number of Options Granted | 630,000 |
Number of Options Exercised |  |
Number of Options Cancelled | 2,000 |
Number of Options Expired |  |
Number of Options outstanding ending balance | 1,917,866 | 1,289,866
Number of Options exercisable | 1,321,142 | 1,176,416
Exercise Price Per Share |  |
Exercise price per share, range | 1.99 - 12.00 |
Exercise price per share, options granted | 2.61 - 10.00 |
Exercise price per share, options cancelled | 1.99 |
Exercise prices at period end | 1.99 - 10.00 |
Exercise price per share, exercisable | 1.99 - 3.17 | 1.99 - 9.00
Weighted Average Remaining Contractual Life |  |
Weighted Average Remaining Contractual Life | 2 years 4 days | 6 years 5 months 27 days
Weighted average remaining contractual life, options granted | 4 years 8 months 26 days |
Weighted average remaining contractual life, options cancelled | 3 years 5 months 9 days |
Weighted average remaining contractual life, exercisable | 14 days | 6 years 3 months
Aggregate Intrinsic Value |  |
Aggregate intrinsic value, options outstanding | $ 0 | $ 0
Aggregate intrinsic value, exercisable | $ 0 | $ 0
Weighted Average Exercise Price Per Share |  |
Weighted Average Exercise Price per Share beginning balance | $ 7.18 |
Weighted Average Exercise Price Options Granted | 5.08 |
Weighted Average Exercise Price Options Cancelled | 1.99 |
Weighted Average Exercise Price Options Expired |  |
Weighted Average Exercise Price per Share ending balance | 3.49 | $ 7.18
Weighted Average Exercise Price per Share Exercisable | $ 2.69 | $ 7.67

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