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&lt;p style="font: 8pt Times New Roman, Times, Serif; margin: 0"&gt;At March 31, 2013 and 2012, we carried accounts receivable balances
of $208,781 and $400,114, respectively. All of those receivable balances represented unpaid invoices under our DARPA contract.
All of those amounts were subsequently collected.&lt;/p&gt;



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