Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Accrued Expenses Schedule (Details)

v3.8.0.1
Accrued Expenses - Accrued Expenses Schedule (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Accrued compensation $ 268,768 $ 247,343
Warranty reserve 478,521 426,115
Other 260,860 407,697
Accrued expenses $ 1,008,149 $ 1,081,155