Quarterly report pursuant to Section 13 or 15(d)

Inventory - Components of Inventory (Details)

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Inventory - Components of Inventory (Details) - USD ($)
Jan. 31, 2019
Oct. 31, 2018
Inventory, Net [Abstract]    
Raw materials and parts $ 2,986,956 $ 2,887,505
Work in progress 470,773 472,204
Finished goods 300,580 463,534
Total Inventory $ 3,758,309 $ 3,823,243