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Deferred Revenue
3 Months Ended
Mar. 31, 2017
Deferred Revenue [Abstract]  
Deferred Revenue

8. Deferred Revenue

Deferred revenue consists of the following:





 

 

 



March 31,

 

December 31,



2017

 

2016



 

 

 

 Product shipped, revenue deferred

$        467,383

 

$        549,709

 Customer deposits

2,910,000 

 

2,910,000 

 Deferred service and license fees

6,433,038 

 

5,813,956 

 Total deferred revenue

9,810,421 

 

9,273,665 

 Less: Long-term deferred revenue

(435,542)

 

(522,329)

 Total current deferred revenue

$     9,374,879

 

$     8,751,336