Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Common stock warrants (Details)

v3.20.2
Note 12 - Common stock warrants (Details)
9 Months Ended
Sep. 30, 2020
USD ($)
$ / shares
shares
Sep. 30, 2019
shares
Dec. 31, 2019
USD ($)
$ / shares
Details      
Warrants issued, Average Contractual Life in Years 17.8   18.5
Weighted Average outstanding warrant exercise price | $ / shares $ 2.11   $ 2.11
Warrants exercised in period, Total 0 0  
Warrants issued in period, Total 0 0  
Warrants issued in period, Intrinsic Value | $ $ 0   $ 875