| Research And Development Expenses |
| | November 30, 2022 | | | November 30, 2021 | | Machinery and equipment expenditures | | $ | 1,059,266 | | | $ | 2,599,758 | | Employee compensation | | | 1,994,594 | | | | 1,786,765 | | External engineering | | | 707,113 | | | | 1,585,512 | | Plant and laboratory operating expenses | | | 915,951 | | | | 665,893 | | Tax credits | | | (299,793 | ) | | | 97,480 | | Other | | | 204,421 | | | | 99,896 | | | | $ | 4,581,552 | | | $ | 6,835,304 | |
| | November 30, 2022 | | | November 30, 2021 | | Machinery and equipment expenditures | | $ | 4,132,575 | | | $ | 7,707,882 | | Employee compensation | | | 6,349,659 | | | | 5,365,581 | | External engineering | | | 2,913,567 | | | | 5,040,342 | | Plant and laboratory operating expenses | | | 2,365,643 | | | | 2,064,403 | | Tax credits | | | (1,207,415 | ) | | | (54,911 | ) | Other | | | 579,162 | | | | 634,640 | | | | $ | 15,133,191 | | | $ | 20,757,937 | |
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