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ELECTRONIC SYSTEMS TECHNOLOGY, INC. DBA ESTEEM WIRELESS MODEMS STATEMENTS OF CASH FLOWS - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net loss $ (140,696) $ (238,373)
Noncash expenses included in loss:    
Depreciation and amortization 26,290 28,714
Deferred income taxes (75,700) (87,491)
Share-based compensation 1,841 0
Decrease (increase) in operating assets:    
Accounts receivable (4,925) 28,590
Inventories (99,856) 115,846
Prepaid expenses 2,019 1,277
Federal income tax refund receivable 2,721  
Accrued interest receivable 958 (4,752)
Increase (decrease) in operating liabilities:    
Accounts payable 6,564 (6,023)
Accrued wages, bonus, vacation and other accrued liabilities (687) (19,666)
Refundable deposits 948 (22,667)
Net Cash used by Operating Activities (280,523) (204,545)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of certificates of deposit (1,000,000) (1,150,000)
Proceeds from maturities of certificates of deposit 1,202,625 1,350,000
Additions to property and equipment   (14,480)
Net Cash from Investing Activities 202,625 185,520
CASH FLOWS USED IN FINANCING ACTIVITIES:    
Repurchase of shares (37,191)  
Net Cash used in Financing Activities (37,191)  
NET DECREASE IN CASH AND CASH EQUIVALENTS (115,089) (19,025)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 618,060 637,086
CASH AND CASH EQUIVALENTS AT END OF YEAR 502,971 618,060
Cash and cash equivalents:    
Total cash and cash equivalents $ 502,971 $ 637,086