Note 5 - Equipment and Leasehold Improvements (Tables)

12 Months Ended

Jun. 30, 2019

Notes Tables

Property, Plant and Equipment [Table Text Block]

	Estimated
	useful lives (in years)	2019		2018
Machinery and equipment	5 - 10	$	593,595	$	593,595
Furniture and office equipment	5 - 10		357,351		357,351
Tooling	5		4,261,077		4,308,967
Computer equipment	3 - 5		758,819		758,820
Leasehold improvements	3 - 10		2,517,226		2,457,006
Assets in progress	N/A		118,737		19,500
			8,606,805		8,495,239
Less: accumulated depreciation and amortization			7,716,695		7,363,134
Equipment and leasehold improvements, net		$	890,110	$	1,132,105