Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net Income (Loss)	$ (2,002,484)	$ (2,858,685)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Depreciation	969,958	920,430
Gain on disposal of equipment	(36,886)	(31,500)
Deferred income taxes	485,739	(703,599)
Changes in operating assets and liabilities
Accounts receivable	(330,918)	(831,171)
Contract assets	118,301
Inventories	(77,129)	326,034
Other current assets	87,886	(97,553)
Accounts payable	471,337	310,567
Accrued wages and salaries	107,838	316,609
Other accrued expenses	171,010	(180,486)
Unearned revenue and customer deposits	(58,047)	96,308
Net cash (used in) provided by operating activities	(93,395)	(2,733,046)
Cash flows from investing activities
Capital expenditures	(709,396)	(949,862)
Proceeds from the sale of equipment	96,350	31,500
Proceeds from short-term investments	3,000,815	2,591,000
Purchases of short-term investments	(1,726,284)	(100,000)
Net cash provided by investing activities	661,485	1,572,638
Cash flows from financing activities
Cash dividends paid	(289,840)	(521,711)
Net cash used in financing activities	(289,840)	(521,711)
Net increase (decrease) in cash and cash equivalents	278,250	(1,682,119)
Cash and cash equivalents at beginning of period	1,387,075	4,045,101
Cash and cash equivalents at end of period	$ 1,665,325	$ 2,362,982