Income Taxes (Components of Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 7,430,299	$ 7,352,719
Deferred income tax liabilities:
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits	0	0
Deferred Tax Assets, Tax Credit Carryforwards, General Business	0	0
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	49,633	21,100
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	48,969	49,336
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves	73,583	69,432
Deferred Tax Assets, Property, Plant and Equipment	57,628	65,432
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves	6,736	6,736
Deferred Tax Assets, Gross	7,666,848	7,564,755
Deferred Tax Assets, Valuation Allowance	(7,649,471)	(7,543,251)
Deferred Tax Assets, Net of Valuation Allowance	17,377	21,504
Deferred Tax Liabilities, Property, Plant and Equipment	(17,377)	(21,504)
Deferred Tax Liabilities, Gross	(17,377)	(21,504)
Deferred Tax Assets, Net	0	0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (106,220)	$ 66,042