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Property and Equipment
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consist of the following: 
 
December 31,
2016
 
December 31,
2015
Computers
$
70,960

 
$
66,945

Research equipment
305,066

 
305,066

 
376,026

 
372,011

Accumulated depreciation
(266,203
)
 
(191,089
)
 
$
109,823

 
$
180,922


All of the research equipment is held by the Company's vendors. Depreciation expense was $75,114, $36,193 and $47,656 for the years ended December 31, 2016, 2015 and 2014, respectively.