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Warrants and Warrant Derivative Liability (Tables)
12 Months Ended
Dec. 31, 2013
Warrants to Purchase Common Shares Outstanding

The Company had 9,789,776 warrants to purchase common shares outstanding at December 31, 2013 at a weighted-average exercise price of $1.44, as summarized in the following table:

 

Issue Date

   Amount      Exercise Price      Expiration Date  

4/27/07

     17,500         17.90         1/17/14   

7/31/09

     1,684,888         1.00         7/30/14   

10/16/09

     7,487,388         1.50         10/15/14   

10/16/09

     600,000         1.50         10/15/14   
  

 

 

    

 

 

    
         9,789,776           $ 1.44