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Inventory (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials and sub-assemblies	$ 4,880,494	$ 3,642,377
Finished goods	359,985	281,104
Inventory reserves	(805,943)	(727,639)
Inventory, net	$ 4,434,536	$ 3,195,842

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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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