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Supplemental Balance Sheet Disclosures - Inventories and Prepaid expenses and other current assets (Details) - USD ($)
Dec. 31, 2022
Sep. 30, 2022
Inventory Valuation    
Raw materials $ 4,685,109 $ 4,451,045
Work-in-process 530,992 795,723
Finished goods 36,194 102,336
Total inventories 5,252,295 5,349,104
Prepaid expenses and other current assets    
Prepaid insurance 801,703 777,311
Other 247,503 365,159
Total prepaid expenses and other current assets $ 1,049,206 $ 1,142,470