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Note 6 - Operating Leases: Maturities of the lease liability (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Notes to Financial Statements    
2020 $ 42,000  
2021 42,000  
2022 42,000  
2023 42,000  
2024 42,000  
Thereafter 171,500  
Total future minimum lease payments 381,500  
Less: amount representing interest (131,481)  
Present value of future payments 250,019  
Operating lease liability, current portion 17,799 $ 16,935
Operating lease liability, net of current portion $ 232,220 $ 241,341