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Annual report pursuant to Section 13 and 15(d)

Accrued expenses (Details)

v3.20.2
Accrued expenses (Details) - USD ($)
Apr. 30, 2020
Apr. 30, 2019
Payables and Accruals [Abstract] Ìý Ìý
Accrued compensation $ 0 $ 226,805
Accrued interest 49,863 135,115
Other accrued expenses 487,550 289,498
Accrued expenses $ 537,413 $ 651,418