Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Changes in Accrued Warranty Obligations (Details)

v3.20.2
Accrued Expenses - Changes in Accrued Warranty Obligations (Details)
6 Months Ended
Jun. 30, 2020
USD ($)
Accrued Expenses  
Accrued Warranty Obligation $ 98,893
Reductions for Settling Warranties (59,780)
Warranties Issued During Period 72,656
Accrued Warranty Obligations $ 111,769