Inventories

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

Note 3. Inventories

Inventories consist of the following at December 31:

	2018			2017
Raw materials	$	1,568,487		$	141,733
Work-in-process		1,144,080			370,318
Finished goods		70,019			161,393
		2,782,586			673,444
Reserve for obsolete inventory		(29,741	)		(56,000	)
	$	2,752,845		$	617,444