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Inventory, net (Tables)
3 Months Ended
Mar. 31, 2022
Inventory, net  
Schedule of inventory

March 31, 

December 31, 

    

2022

    

2021

Raw materials

$

28

$

34

Work in process

9

6

Total

$

37

$

40

Inventory reserve

(1)

(1)

Inventory, net

$

36

$

39