Quarterly report pursuant to Section 13 or 15(d)

E. ACCRUED LIABILITIES AND EXPENSES

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E. ACCRUED LIABILITIES AND EXPENSES
 3 Months Ended
Mar. 31, 2018
Payables and Accruals [Abstract]  
ACCRUED LIABILITIES AND EXPENSES

Accrued liabilities and expenses at March 31, 2018 and December 31, 2017 are as follows:

 

    March 31,
2018 		    December 31,
2017 		 
Accrued liabilities and expenses   $ 186,965     $ 294,709  
Accrued payroll and payroll taxes     314,830       230,931  
Accrued sales taxes, penalties, and interest     44,149       83,282  
Product warranties     55,316       59,892  
Total accrued liabilities and expenses   $ 601,260     $ 668,814