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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Sales:
Product	$ 4,476,717	$ 6,376,042	$ 12,566,311	$ 20,771,687
Engineering development contracts	64,704	128,550	550,889	977,465
Returns and allowances			(556,009)
Total net sales	4,541,421	6,504,592	12,561,191	21,749,152
Cost of sales:
Product	2,074,500	2,490,681	5,996,291	8,461,419
Engineering development contracts	89,640	130,335	298,332	185,000
Total cost of sales	2,164,140	2,621,016	6,294,623	8,646,419
Gross profit	2,377,281	3,883,576	6,266,568	13,102,733
Operating expenses:
Research and development	1,236,184	1,405,158	3,391,181	3,674,374
Selling, general and administrative	1,682,286	2,246,074	2,025,952	7,531,633
Total operating expenses	2,918,470	3,651,232	5,417,133	11,206,007
Operating (loss) income	(541,189)	232,344	849,435	1,896,726
Interest income	7,682	9,092	27,505	24,458
Other income	15,628	12,457	4,174,953	71,490
(Loss) income before income taxes	(517,879)	253,893	5,051,893	1,992,674
Income tax (benefit) expense	(537,099)	27,096	297,220	403,002
Net income	$ 19,220	$ 226,797	$ 4,754,673	$ 1,589,672
Net income per common share:
Basic (in dollars per share)	$ 0.00	$ 0.01	$ 0.28	$ 0.09
Diluted (in dollars per share)	$ 0.00	$ 0.01	$ 0.28	$ 0.09
Weighted average shares outstanding:
Basic (in shares)	16,755,082	16,941,707	16,735,533	16,925,688
Diluted (in shares)	16,870,404	17,059,546	16,847,305	17,027,216

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