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Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Summary Of Significant Accounting Policies Narrative    
Allowance for accounts receivable $ 742 $ 118,589
Bad debt 16,868 114,748
Cost in excess of billing 0 21,606
Research and development costs 0 0
Advertising costs $ 119,332 $ 4,797