Condensed Balance Sheets - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 41,000	$ 98,000
Accounts receivable, net of allowance for doubtful accounts of $5,000 at September 30, 2021 and $22,000 at December 31, 2020	545,000	407,000
Inventory, net of allowance of $323,000 at September 30, 2021 and $279,000 at December 31, 2020	419,000	536,000
Tax Receivable - Employee Retention Credit	537,000	0
Prepaid expenses and other current assets	31,000	104,000
Right of use asset - operating leases, current	36,000	35,000
Total current assets	1,609,000	1,180,000
Property, plant and equipment, net	529,000	576,000
Patents, net	102,000	108,000
Right of use asset - operating leases	14,000	41,000
Other assets	21,000	21,000
Total assets	2,275,000	1,926,000
Current liabilities
Accounts payable	667,000	577,000
Accrued expenses and other current liabilities	468,000	620,000
Right of use liability - operating leases, current	34,000	33,000
Wages payable	83,000	107,000
Line of credit	446,000	277,000
PPP Loan	0	332,000
Current portion of long-term debt, net of deferred finance costs	1,290,000	75,000
Total current liabilities	2,988,000	2,021,000
Right of use liability - operating leases	13,000	41,000
Long-term debt, net of current portion and deferred finance costs and other liabilities	0	1,120,000
Total liabilities	3,001,000	3,182,000
Stockholders' deficit:
Preferred stock; par value $.01 per share; 5,000,000 shares authorized, none issued and outstanding at September 30, 2021 and December 31, 2020	0	0
Common stock; par value $.01 per share; 50,000,000 shares authorized; 44,898,476 issued and outstanding at September 30, 2021 and 37,703,476 issued and outstanding as of December 31, 2020	449,000	377,000
Additional paid-in capital	22,313,000	21,717,000
Accumulated deficit	(23,488,000)	(23,350,000)
Total stockholders' deficit	(726,000)	(1,256,000)
Total liabilities and stockholders' deficit	$ 2,275,000	$ 1,926,000