Property and Equipment

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

Note 4. Property and Equipment

Property and equipment consisted of the following as of:

	June 30, 2019			December 31, 2018
Computer equipment	$	1,116,553		$	1,054,004
Furniture and office equipment		219,399			207,921
Machinery and equipment		1,091,228			1,021,188
STEP equipment		161,695			-
Leasehold improvements		324,313			324,313
Total property and equipment		2,913,188			2,607,426
Less: Accumulated depreciation		(2,069,161	)		(1,929,181	)
Property and equipment, net	$	844,027		$	678,245

Depreciation expense was $71,197 and $74,587 for the three months ended June 30, 2019 and 2018, respectively. Depreciation expense was $141,509 and $143,206 for the six months ended June 30, 2019 and 2018, respectively.