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Note 2 - Basic and Diluted Loss Per Share
9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Earnings Per Share [Text Block]
2.
Basic and Diluted Loss per Share
 
Basic loss per common share is computed using the weighted average number of common shares outstanding during the period. Diluted loss per common share is computed using the weighted average number of common shares and potential dilutive common shares that were outstanding during the period. Potential dilutive common shares consist of outstanding stock options, outstanding stock warrants, and convertible preferred stock.
 
The following table sets forth the computation of basic and diluted loss per share:
 
   
Three months ended
   
Nine months ended
 
   
September 30
   
September 30
 
   
2018
   
2017
   
2018
   
2017
 
Numerator:
                               
Net loss
  $
(542,301
)   $
(319,103
)   $
(1,758,560
)   $
(314,975
)
Denominator:
                               
Denominator for basic loss per share – weighted average shares
   
1,845,000
     
1,845,000
     
1,845,000
     
1,845,000
 
                                 
Dilutive effect of employee stock options and other warrants
   
-
     
-
     
-
     
-
 
                                 
Denominator for diluted loss per share – adjusted weighted average shares
   
1,845,000
     
1,845,000
     
1,845,000
     
1,845,000
 
                                 
Basic loss per share
  $
(0.29
)   $
(0.17
)   $
(0.95
)   $
(0.17
)
Diluted loss per share
  $
(0.29
)   $
(0.17
)   $
(0.95
)   $
(0.17
)
 
Options and warrants to purchase
120,242
shares of common stock for the
three
months and
nine
months ended
September 30, 2018,
respectively, were
not
included in the denominator for diluted loss per share because their effect would be antidilutive or because the shares were deemed contingently issuable. Options and warrants to purchase
146,715
shares of common stock for the
three
months and
nine
months ended
September 30, 2017,
respectively, were
not
included in the denominator for diluted loss per share because their effect would be antidilutive or because the shares were deemed contingently issuable.