Note 3 - Inventory

3 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

3.

Inventory

Inventory consists of the following at

March 31, 2018

and

December 

31,

2017:

	March 31, 2018		December 31, 2017
Raw materials	$	573,331	$	582,816
Work in progress		517,027		453,890
Finished goods		746,308		810,040
Total	$	1,836,666	$	1,846,746