Note 7 - Inventories

9 Months Ended

Dec. 31, 2019

Notes to Financial Statements

Inventory Disclosure [Text Block]

7. Inventories:

	March 31, 2019		December 31, 2019
Finished goods	$	102,373	$	93,432
Work in process		142,475		156,514
Raw materials		386,840		424,751
Total Inventories, net	$	631,688	$	674,697