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Summary of Significant Accounting Policies (Details 1) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Gross property and equipment $ 5,536,000 $ 5,504,000
Accumulated depreciation and amortization (5,040,000) (4,955,000)
Net property and equipment 496,000 549,000
Production Tooling, Machinery and Equipment    
Gross property and equipment 3,685,000 3,685,000
Office Furniture and Fixtures    
Gross property and equipment 425,000 393,000
Computer Equipment and Software    
Gross property and equipment $ 1,426,000 $ 1,426,000