Balance Sheets (Unaudited) - USD ($)	Sep. 25, 2021	Dec. 26, 2020
Current assets:
Cash and cash equivalents	$ 3,837,737	$ 195,203
Accounts receivable-trade, net	5,032,187	2,914,800
Inventories, net	3,773,228	3,709,471
Prepaid expenses and other current assets	132,315	71,506
Total current assets	12,775,467	6,890,980
Property and equipment:
Production equipment	10,370,212	10,265,471
Furniture and office equipment	568,846	568,846
Leasehold improvements	951,384	951,384
Total cost	11,890,442	11,785,701
Accumulated depreciation and amortization	(10,964,044)	(10,558,816)
Construction in progress	248,846	61,062
Net property and equipment	1,175,244	1,287,947
Right-of-use lease asset	613,000	25,000
Deferred taxes, net	2,907,809	117,000
Total assets	17,471,520	8,320,927
Current liabilities:
Note payable, current portion	44,821	58,134
Accounts payable	1,699,154	909,291
Accrued expenses	902,199	804,091
Deferred revenue	1,150,797	12,177
Current lease liability	153,000	25,000
Total current liabilities	3,949,971	1,808,693
Note payable less current portion	124,566	154,570
Long-term lease liability	460,000	0
Total liabilities	4,534,537	1,963,263
Commitments (note 4)
Stockholders` equity:
Common stock, $0.01 par value, authorized 20,000,000 shares; issued 14,348,786 and 13,746,242, respectively; outstanding 14,348,451 and 13,313,790, respectively; at September 25, 2021 and December 26, 2020;	143,487	137,462
Additional paid-in capital	39,270,312	36,688,894
Accumulated deficit	(26,474,301)	(29,472,368)
Less cost of 335 and 432,452 common shares repurchased, respectively; at September 25, 2021 and December 26, 2020	(2,515)	(996,323)
Total stockholders` equity	12,936,983	6,357,665
Total liabilities and stockholders` equity	$ 17,471,520	$ 8,320,927