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4. Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2019
Property, Plant and Equipment [Abstract]  
Property and equipment
   June 30,
2019
   December 31,
2018
 
Office equipment  $30,000   $30,000 
Furniture and fixtures   5,000    5,000 
Testing Equipment   37,000    37,000 
Leasehold Improvements   25,000    25,000 
Subtotal   97,000    97,000 
Less accumulated depreciation   (76,000)   (73,000)
Total  $21,000   $24,000