Note 3 - Property and Equipment - Property and Equipment (Details) - USD ($)	Jun. 30, 2021	Jun. 30, 2020
Machinery and equipment	$ 2,222,670	$ 2,222,670
Buildings and structures	401,470	401,470
Computers and office equipment	171,485	171,485
Total	2,795,625	2,795,625
Less accumulated depreciation	(2,795,084)	(2,794,257)
Net	$ 541	$ 1,368

This item represents the gross amount computers and office equipment held by the Company.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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