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Property Plant and Equipment
 3 Months Ended
Mar. 31, 2023
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, 
   2023   2022 
Manufacturing and customer equipment  $3,637,000   $3,637,000 
Other property   69,000    69,000 
Property and equipment, gross   3,706,000    3,706,000 
Less: accumulated depreciation   (3,409,000)   (3,317,000)
Property and equipment, net of depreciation  $297,000   $389,000 

 

Depreciation expense related to these assets was approximately $92,000 and $145,000 for the three months ended March 31, 2023 and 2022, respectively. Depreciation expense in cost of revenue was $4,000 for the three months ended March 31, 2023. There was no depreciation expense in cost of revenue for the three months ended March 31, 2022.