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Property and Equipment, Net
6 Months Ended
Jun. 30, 2021
Property and Equipment, Net  
Property and Equipment, Net

(2)

Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):

    

June 30,

    

December 31,

2021

2020

Research and development equipment

$

40

$

40

Less accumulated depreciation

 

(5)

 

(1)

Total property and equipment, net

$

35

$

39