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Note 4 - Inventories (Tables) | 12 Months Ended
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Jun. 30, 2018
Inventory Disclosure [Abstract] |
Schedule of Inventory |
|  | June 30, 2018 |  |  | June 30, 2017 |
Raw materials |  | $ | 807,000 |  |  | $ | 445,000 |
Work in process |  |  | 333,000 |  |  |  | 251,000 |
Finished goods |  |  | 372,000 |  |  |  | 870,000 |
Total Inventories |  | $ | 1,512,000 |  |  | $ | 1,566,000 |

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