Inventories: Inventories (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Details
Raw material	$ 5,018,465	$ 4,645,923
Work-in-process	3,143,844	2,181,457
Finished goods	2,395,163	2,304,400
Inventories, gross	10,557,472	9,131,780
Valuation reserves	(636,000)	(612,000)
Inventories, net	$ 9,921,472	$ 8,519,780

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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