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Property and Equipment (Tables)
 3 Months Ended
Mar. 31, 2019
Property Plant And Equipment [Abstract]  
Property and Equipment, Net

Property and equipment, net consists of the following:

 

 

 

March 31,

 

 

December 31,

 

 

 

2019

 

 

2018

 

Computers and computer equipment

 

$

613,856

 

 

$

609,921

 

Furniture and office equipment

 

 

194,099

 

 

 

211,759

 

Manufacturing equipment and engineering tools

 

 

2,388,212

 

 

 

2,211,080

 

Leasehold improvements

 

 

163,373

 

 

 

163,373

 

 

 

 

3,359,540

 

 

 

3,196,133

 

Less:  accumulated depreciation and amortization

 

 

(1,971,580

)

 

 

(1,880,167

)

 

 

 

1,387,960

 

 

 

1,315,966

 

Construction in progress - facilities

 

 

649,623

 

 

 

197,619

 

Software implementation in progress - ERP

 

 

403,111

 

 

 

245,501

 

 

 

$

2,440,694

 

 

$

1,759,086