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Property and Equipment
 6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment

 

  4. Property and Equipment

 

At June 30, 2021 and December 31, 2020, property and equipment consisted of the following: 

          
  

June 30,
2021

(unaudited)

   December 31,
2020		 
Office equipment  $36,000   $36,000 
Furniture and fixtures   5,000    5,000 
Testing Equipment   37,000    37,000 
Leasehold Improvements   25,000    25,000 
Subtotal   103,000    103,000 
Less accumulated depreciation   (90,000)   (87,000)
Total  $13,000   $16,000 

 

Depreciation expense for the six-month periods ended June 30, 2021 and 2020 was $3,000 and $3,000, respectively. Depreciation expense for the three-month periods ended June 30, 2021 and 2020 was $2,000 and $1,000, respectively.