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Inventory Components (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials and sub-assemblies	$ 3,140,461	$ 2,785,154
Finished goods	255,938	335,335
Inventory reserves	(868,161)	(848,161)
Inventories, net	$ 2,528,238	$ 2,272,328

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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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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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