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Prepaid Expenses (Tables)
12 Months Ended
Dec. 31, 2018
Other Income (Expense):  
Prepaid expenses
  

December 31,

2018

 

December 31,

2017

Vendor deposits  $28,000   $46,000 
Investor relations   —      2,500 
Total prepaid expenses  $28,000   $48,500