CONDENSED BALANCE SHEETS (unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 4,224,820	$ 5,042,477
Accounts receivable, net	4,784,754	3,098,635
Inventories	1,557,402	1,254,915
Investment in debt securities	6,386,774	6,462,369
Prepaid and other current assets	799,383	900,722
Total Current Assets	17,753,133	16,759,118
Property and Equipment, Net	473,616	433,408
Patent Rights, Net	578,316	626,509
Investment in Debt Securities		1,103,773
Deposits	24,272	24,272
Total Assets	18,829,337	18,947,080
Current Liabilities
Accounts payable and accrued expenses	3,565,098	2,762,371
Product warranties	98,296	40,481
Revolving credit facility	1,447,970	0
Deferred revenue, current portion	848,971	853,798
Total Current Liabilities	5,960,335	3,656,650
Deferred Revenue, Net of Current Portion	19,317	16,251
Total Liabilities	5,979,652	3,672,901
Commitments and Contingencies
Stockholders' Equity
Preferred stock, 5,000,000 shares authorized and none issued and outstanding.
Common stock, $0.01 par value - 50,000,000 authorized;13,522,168 issued and 13,488,714 outstanding at June 30, 2017; 13,546,171 issued and outstanding at December 31, 2016	135,221	135,461
Additional paid-in capital	22,976,780	22,930,975
Treasury stock, 33,454 and 0 shares at cost, at June 30, 2017 and December 31, 2016, respectively	(133,816)
Accumulated deficit	(10,128,500)	(7,792,257)
Total Stockholders' Equity	12,849,685	15,274,179
Total Liabilities and Stockholders' Equity	$ 18,829,337	$ 18,947,080

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.