Quarterly report pursuant to Section 13 or 15(d)

9. Commitments and Contingencies (Tables)

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9. Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2017
Commitments And Contingencies Tables  
Future minimum maintenance fee payments

For the twelve months ended June 30        
2018   $ 86,000  
2019     50,000  
2020     45,000  
    $ 181,000