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Note I - Furniture, Fixtures and Equipment - Summary of Furniture, Fixtures and Equipment (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Furniture, fixtures and equipment $ 863,379 $ 818,170
Less accumulated depreciation (721,619) (659,144)
Total 141,760 159,026
Leasehold Improvements [Member]    
Furniture, fixtures and equipment 24,734 24,734
Office Furniture and Equipment [Member]    
Furniture, fixtures and equipment 134,947 135,802
Tools, Dies and Molds [Member]    
Furniture, fixtures and equipment 7,200 7,200
Trade Show Displays [Member]    
Furniture, fixtures and equipment 143,357 143,357
Computer and Software [Member]    
Furniture, fixtures and equipment 231,704 224,840
Tooling Safety Wand [Member]    
Furniture, fixtures and equipment 125,022 125,022
Website [Member]    
Furniture, fixtures and equipment 39,200
Tooling Equipment - STA and Wand [Member]    
Furniture, fixtures and equipment 11,100 11,100
EPI and IA Instruments [Member]    
Furniture, fixtures and equipment 82,363 82,363
STA Trials Instruments [Member]    
Furniture, fixtures and equipment $ 63,752 $ 63,752