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Property Plant and Equipment
 3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Property Plant and Equipment

Note 3. Property Plant and Equipment

 

Property and equipment, net consist of the following:

 

   March 31,   December 31, 
   2022   2021 
Furniture and fixtures  $1,524   $1,524 
Manufacturing equipment and customer equipment   3,813,763    3,800,238 
Leasehold improvements   4,886    4,886 
Vehicles   29,696    29,696 
Property and equipment, gross   3,849,869    3,836,344 
Less: accumulated depreciation   (3,039,673)   (2,894,632)
Property and equipment   810,196    941,712 
Equipment not yet placed in service   646,331    646,331 
Property and equipment, net of depreciation  $1,456,527   $1,588,043 

 

Depreciation expense related to these assets was approximately $145,000 and $131,000 for the three months ended March 31, 2022 and 2021, respectively. Depreciation expense in cost of revenue was approximately $6,000 for three months ended March 31, 2021. There was no depreciation expense in cost of revenue for the three months ended March 31, 2022.