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Fixed Assets - Summary (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Fixed Assets    
Machinery and equipment $ 720,000 $ 720,000
Office furniture and equipment 180,000 180,000
Leasehold improvements 149,000 149,000
Right of use asset-operating leases 1,235,000 1,024,000
Fixed assets, gross 2,284,000 2,073,000
Accumulated depreciation and amortization (1,594,000) (1,657,000)
Fixed assets, net, before Construction in progress 690,000 416,000
Construction in progress 65,000 11,000
Property, Plant and Equipment, Net, Total $ 755,000 $ 427,000