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5. Other Assets (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Other assets consisted of:    
Deposit with Trustee of 6-1/2% debentures $ 41,000 $ 48,000
Prepaid expenses 2,000 2,000
Deferred charges 1,000 1,000
Total Other Assets $ 44,000 $ 51,000