Condensed Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,288,806	$ 1,173,177
Receivables on government contracts	1,941,582	1,697,997
Prepaid expenses and other current assets	81,160	72,542
Total current assets	3,311,548	2,943,716
Property and equipment
Equipment	210,388	171,018
Leasehold improvements	21,306	21,306
Furniture & fixtures	42,485	37,557
Less: accumulated depreciation	(102,342)	(106,570)
Property and equipment, net	171,837	123,311
Intangible assets	139,945	137,683
Less: accumulated amortization	(69,966)	(54,101)
Intangible assets, net	69,979	83,582
Deferred tax assets	55,777	8,745
Total assets	3,609,141	3,159,354
Current liabilities:
Accrued payroll and payroll taxes	765,816	575,926
Accounts payable and accrued expenses	360,697	482,873
Accrued warranty expense	130,370	40,000
Deferred revenue	25,250	18,750
Total current liabilities	1,282,133	1,117,549
Long-term liabilities	18,930	21,920
Total liabilities	1,301,063	1,139,469
Shareholders' equity:
Preferred stock, convertible, par value $.01 per share, authorized 5,000,000 shares, none issued and outstanding
Common stock, par value $.01 per share, authorized 60,000,000 shares, issued and outstanding 35,568,775 and 35,561,775 shares, respectively	355,689	355,619
Capital in excess of par value	10,101,805	10,087,843
Accumulated deficit	(8,149,416)	(8,423,577)
Total shareholders' equity	2,308,078	2,019,885
Total liabilities and shareholders' equity	$ 3,609,141	$ 3,159,354