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Inventories (Tables)
12 Months Ended
Oct. 31, 2018
Inventory Disclosure [Abstract]  
Inventories

Inventories consisted of the following:   2018   2017
Raw materials   $ 1,901,707     $ 2,287,901  
Work in process     2,166,663       1,966,519  
Finished goods     188,715       175,228  
    $ 4,257,085     $ 4,429,648