Condensed Balance Sheets - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 54,000	$ 113,000
Accounts receivable, net of allowance for doubtful accounts of $55,000 at March 31, 2019 and $52,000 at December 31, 2018	392,000	452,000
Inventory, net of allowance of $514,000 at March 31, 2019 and $500,000 at December 31, 2018	973,000	1,019,000
Prepaid expenses and other current assets	48,000	29,000
Total current assets	1,467,000	1,613,000
Property, plant and equipment, net	699,000	718,000
Patents, net	121,000	123,000
Other assets	29,000	21,000
Total assets	2,316,000	2,475,000
Current liabilities
Accounts payable	521,000	359,000
Accrued expenses and other current liabilities	440,000	449,000
Wages payable	276,000	278,000
Line of credit	421,000	502,000
Current portion of long-term debt	1,013,000	237,000
Total current liabilities	2,671,000	1,825,000
Long-term debt, net of current portion and deferred finance costs	12,000	796,000
Total liabilities	2,683,000	2,621,000
COMMITMENTS AND CONTINGENCIES
Stockholders' equity:
Preferred stock; par value $.01 per share; 5,000,000 shares authorized, none issued and outstanding at March 31, 2019 and December 31, 2018	0	0
Common stock; par value $.01 per share; 50,000,000 shares authorized; 32,518,361 issued and outstanding at March 31, 2019 and 32,279,368 issued and outstanding as of December 31, 2018	325,000	323,000
Additional paid-in capital	21,421,000	21,404,000
Accumulated deficit	(22,113,000)	(21,873,000)
Total stockholders' equity	(367,000)	(146,000)
Total liabilities and stockholders' equity	$ 2,316,000	$ 2,475,000