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4. Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property and equipment
   December 31, 
   2013   2012 
         
Office equipment  $65,051   $91,288 
Furniture and fixtures   4,075    16,128 
Machinery and equipment       49,986 
Testing equipment       147,312 
Subtotal   69,126    304,714 
Less accumulated depreciation   (33,355)   (249,040)
Total  $35,771   $55,674