Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stockholders' Equity - Fair Value Assumptions for Stock Options (Details)

v3.19.2
Note 4 - Stockholders' Equity - Fair Value Assumptions for Stock Options (Details)
6 Months Ended
Jun. 30, 2019
Minimum [Member]  
Expected life (Year) 5 years
Risk free interest rate 1.90%
Expected volatility 97.00%
Maximum [Member]  
Expected life (Year) 5 years 182 days
Risk free interest rate 2.50%
Expected volatility 101.00%