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Equipment and Leasehold Improvements | 12 Months Ended
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Jun. 30, 2024
Equipment and Leasehold Improvements [Abstract] |
Equipment and Leasehold Improvements | 6. EQUIPMENT AND LEASEHOLD IMPROVEMENTS The major categories of equipment and leasehold improvements at June 30, 2024 and 2023 are summarized as follows:
|  | Estimated useful lives (in years) |  |  | 2024 |  |  | 2023
Machinery and equipment |  | 5 - 10 |  | $ | 619,064 |  | $ | 619,064
Furniture and office equipment |  | 5 - 10 |  |  | 337,419 |  |  | 337,419
Tooling |  | 5 |  |  | 3,765,766 |  |  | 4,506,044
Computer & technology equipment |  | 3 - 5 |  |  | 197,073 |  |  | 197,072
Leasehold improvements |  | 3 - 11 |  |  | 3,171,070 |  |  | 2,864,335
Assets in progress |  | N/A |  |  | 359,990 |  |  | 256,038
|  |  |  |  |  | 8,450,382 |  |  | 8,779,972
Less: accumulated depreciation and amortization |  |  |  |  |  | 7,226,991 |  |  | 7,826,069
Equipment and leasehold improvements, net |  |  |  |  | $ | 1,223,391 |  | $ | 953,903
During the year ended June 30, 2024 and 2023, depreciation expense was $192,272 and $230,292, respectively.

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