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Note 1 - The Company and Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2018
Note 1 - Company And Summary Of Significant Accounting Policies  
Potentially dilutive securities
  September 30,
  2018   2017
Exercise of common stock warrants 1,813,053                            -   
Conversion of preferred stock into common stock 1,163,659               1,513,659
Exercise of common stock options 1,246                      1,246
  2,977,958   1,514,905