Consolidated Balance Sheets - USD ($)	Jun. 30, 2021	Jun. 30, 2020
Current Assets:
Cash and cash equivalents	$ 861,650	$ 1,134,697
Accounts receivable (net of allowance for doubtful accounts of $251,383 at June 30, 2021 and $248,450 at June 30, 2020)	1,878,755	1,481,437
Inventories	1,885,395	2,197,244
Prepaid expenses	150,635	133,707
Total current assets	4,776,435	4,947,085
Fixed Assets:
Machinery and equipment	3,084,511	2,907,533
Leasehold improvements	792,723	731,801
Furniture and fixtures	178,640	178,640
Total	4,055,874	3,817,974
Less: Accumulated depreciation and amortization	3,461,622	3,314,824
Net fixed assets	594,252	503,150
Operating lease right-to-use asset	61,247	118,403
Patents, net	141,702	95,229
Goodwill	687,664	687,664
TOTAL ASSETS	6,261,300	6,351,531
Current Liabilities:
Current portion of capital lease obligation	38,347	51,761
Current portion of acquisition earn out liability	166,667	166,667
Note payable to bank	0	808,962
Accounts payable	1,205,149	1,066,005
Customer advances	450,084	417,059
Accrued compensation and other	589,616	581,770
Operating lease liability	61,247	57,156
Total current liabilities	2,511,110	3,149,380
Capital lease obligation, net of current portion	152,397	35,810
Acquisition earn out liability	166,666	333,333
Operating lease liability	0	61,247
Stockholders' Equity:
Common stock, $0.01 par value: 50,000,000 shares authorized; issued and outstanding - 13,282,476 shares at June 30, 2021 and 13,191,789 shares at June 30, 2020	132,825	131,918
Additional paid-in capital	50,464,280	49,702,986
Accumulated deficit	(47,165,978)	(47,063,143)
Total stockholders' equity	3,431,127	2,771,761
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 6,261,300	$ 6,351,531