Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 3,171,532	$ 2,672,742	$ 10,914,787	$ 8,948,575
Cost of sales	1,763,739	1,661,653	5,824,341	5,066,052
Gross margin	1,407,793	1,011,089	5,090,446	3,882,523
Selling, general and administrative	523,966	740,696	1,674,618	1,866,756
Litigation expenses	17,145	1,998	21,545	10,208
Engineering, research, and development	574,118	492,432	1,950,545	1,678,940
Total operating expenses	1,115,229	1,235,126	3,646,708	3,555,904
Income (loss) from operations	292,564	(224,037)	1,443,738	326,619
Interest income	996	1,591	2,977	6,316
Other income	0	758	35,854	14,612
Gain on forgiveness of PPP loan	0	722,577	722,577	722,577
Interest expense – judgement	(52,490)	(52,490)	(156,901)	(180,124)
Interest expense	0	(8,030)	0	(27,190)
Total other net (expense) income	(51,494)	664,406	604,507	536,191
Income before income taxes	241,070	440,369	2,048,245	862,810
Income tax (benefit) expense	46,448	(59,264)	278,446	29,449
Net income	194,622	499,633	1,769,799	833,361
Preferred dividends	(80,000)	(80,000)	(240,000)	(240,000)
Net income attributable to common shareholders	$ 114,622	$ 419,633	$ 1,529,799	$ 593,361
Basic income per common share (in Dollars per share)	$ 0.04	$ 0.13	$ 0.47	$ 0.18
Diluted income per common share (in Dollars per share)	$ 0.04	$ 0.1	$ 0.35	$ 0.16
Weighted average shares outstanding:
Basic (in Shares)	3,255,887	3,255,887	3,255,887	3,255,887
Diluted (in Shares)	5,095,665	5,095,665	5,095,665	5,065,665