Quarterly report pursuant to Section 13 or 15(d)

E. ACCRUED LIABILITIES AND EXPENSES (Tables)

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E. ACCRUED LIABILITIES AND EXPENSES (Tables)
9 Months Ended
Sep. 30, 2018
Payables and Accruals [Abstract]  
Accrued Liabilities and Expenses
    September 30,
2018
    December 31,
2017
 
Accrued liabilities and expenses   $ 590,336     $ 294,709  
Accrued payroll and payroll taxes     291,143       230,931  
Accrued sales taxes, penalties, and interest     37,171       83,282  
Product warranties     47,967       59,892  
Total accrued liabilities and expenses   $ 966,617     $ 668,814