Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Inventories - Summary of Inventories (Details)

v3.20.2
Note 4 - Inventories - Summary of Inventories (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Component parts and other materials $ 354,692 $ 99,885
Total inventories 2,229,760 1,620,509
Dental Segment [Member]    
Finished goods, net 1,705,519 1,306,763
Medical Segment [Member]    
Finished goods, net $ 169,549 $ 213,861