v3.23.1
STATEMENTS OF CASH FLOWS - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 538,020 $ 384,401
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and accretion 114,487 101,246
Amortization of patents 1,104 1,104
Stock based compensation 45,090 23,299
Gain on disposal of equipment 9,142 5,166
Deferred tax asset 116,933 56,000
Inventory reserve 954 1,500
Changes in operating assets and liabilities:    
Accounts receivable 7,222 (232,092)
Inventories (442,168) (192,002)
Prepaid expenses (200,093) 476,202
Other assets   (1)
Accounts payable (198,002) 94,916
Operating lease assets and liabilities, net (2,510) (1,948)
Accrued expenses and customer deposits 747,869 (103,467)
Net cash provided by operating activities 719,764 603,992
CASH FLOWS FROM INVESTING ACTIVITIES    
Proceeds on sale of equipment 16,000 5,166
Purchases of property and equipment (163,721) (79,842)
Net cash used in investing activities (147,721) (74,676)
CASH FLOWS FROM FINANCING ACTIVITIES    
Principal payments on finance lease obligations and notes payable (24,840) (23,783)
Net cash used in financing activities (24,840) (23,783)
NET INCREASE IN CASH 547,203 505,533
CASH - Beginning of year 3,947,966 4,140,942
CASH - End of period 4,495,169 4,646,475
Cash paid during the period for:    
Interest 1,486 2,543
SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING AND FINANCING ACTIVITIES    
Increase in asset retirement obligation $ 1,725 $ 1,725