Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 1,689,610	$ 3,407,760
Accounts receivable-trade, net	3,034,175	1,959,606
Inventories, net	1,675,338	1,970,961
Prepaid expenses and other current assets	79,579	88,443
Total current assets	6,478,702	7,426,770
Property and equipment:
Production equipment	9,081,157	9,046,846
Furniture and office equipment	493,152	412,412
Leasehold improvements	886,582	886,582
Total cost	10,460,891	10,345,840
Accumulated depreciation and amortization	(9,133,201)	(8,720,219)
Construction in progress	172,343	158,006
Net property and equipment	1,500,033	1,783,627
Deferred taxes,	3,450,349	2,827,349
Total assets	11,429,084	12,037,746
Current liabilities:
Accounts payable	837,217	662,482
Accrued expenses	615,883	623,959
Total current liabilities	1,453,100	1,286,441
Stockholders’ equity:
Common stock, $0.01 par value authorized 20,000,000 shares; issued 13,423,492; outstanding 13,203,436; at September 30, 2017 and December 31, 2016,	134,235	134,235
Additional paid-in capital	35,601,753	35,452,685
Accumulated deficit	(25,242,951)	(24,318,562)
Less cost of 220,056 common shares repurchased at September 30, 2017 and December 31, 2016,	(517,053)	(517,053)
Total stockholders equity	9,975,984	10,751,305
Total liabilities and stockholders equity	$ 11,429,084	$ 12,037,746