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Research and Development Expenses | 9 Months Ended
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Nov. 30, 2021
Research and Development Expenses |
14. Research and development expenses | 14. Research and Development Expenses Research and development expenses for the three-month periods ended November 30, 2021 and 2020 were as follows:
|  | November 30, 2021 |  |  | November 30, 2020 |
Machinery and equipment expenditures |  | $ | 2,599,758 |  |  | $ | 2,325,540 |
Employee compensation |  |  | 1,786,765 |  |  |  | 1,214,434 |
External engineering |  |  | 1,585,512 |  |  |  | 2,224,910 |
Plant and laboratory operating expenses |  |  | 665,893 |  |  |  | 515,395 |
Other |  |  | 197,376 |  |  |  | (5,996 | )
|  | $ | 6,835,304 |  |  | $ | 6,274,283 |
Research and development expenses for the nine-month periods ended November 30, 2021 and 2020 were as follows:
|  | November 30, 2021 |  |  | November 30, 2020 |
Machinery and equipment expenditures |  | $ | 7,707,882 |  |  | $ | 2,325,540 |
Employee compensation |  |  | 5,365,581 |  |  |  | 3,094,151 |
External engineering |  |  | 5,040,342 |  |  |  | 3,241,959 |
Plant and laboratory operating expenses |  |  | 2,064,403 |  |  |  | 1,385,892 |
Other |  |  | 579,729 |  |  |  | 456,551 |
|  | $ | 20,757,937 |  |  | $ | 10,504,093 |
During the nine-month period ended November 30, 2021, we recorded reimbursable research and development tax credits of $54,911 as a reduction of research and development expenses and an expense of $151,379 in the nine-month period ended November 30, 2020. The expense in the nine-month period ended November 30, 2020 was due to a revision of research and development tax credits by Canadian tax authorities. During the nine-month period ended November 30, 2021, we recorded no government grants as a reduction of research and development expenses (2020 – $200,738).

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