Annual report pursuant to Section 13 and 15(d)

4. Property and Equipment (Tables)

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4. Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Property and equipment
    December 31,  
    2016     2015  
             
Office equipment   $ 28,000     $ 65,000  
Furniture and fixtures     3,000       4,000  
Testing equipment     18,000       13,000  
Subtotal     49,000       82,000  
Less accumulated depreciation     (32,000 )     (60,000 )
Total   $ 17,000     $ 22,000