STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 309,717	$ 545,324
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and accretion	104,369	125,544
Amortization of patents	1,233	1,233
Stock based compensation		43,980
Deferred taxes	84,140	76,545
Inventory reserve	510	510
Changes in operating assets and liabilities:
Accounts receivable	76,619	(224,900)
Inventories	241,340	968,847
Prepaid purchase orders	56,898	1,106,146
Prepaid expenses	38,914	63,003
Other assets		(14,000)
Accounts payable	39,068	(33,544)
Operating lease assets and liabilities, net		(3,028)
Customer deposits	200,162	(2,442,538)
Accrued liabilities	(219,617)	(224,816)
Net cash provided by operating activities	933,353	(11,694)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of marketable securities	(750,000)	(500,000)
Proceeds from maturities of marketable securities	500,000	500,000
Purchases of property and equipment	(83,336)	(176,534)
Net cash used in investing activities	(333,336)	(176,534)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal payments on finance lease obligations		(20,439)
NET INCREASE IN CASH	600,017	(208,667)
CASH - Beginning of year	6,753,403	5,673,994
CASH - End of period	7,353,420	5,465,327
Cash paid during the year for:
Interest		447
SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING AND FINANCING ACTIVITIES
Increase in asset retirement obligation	$ 1,725	$ 1,725