Annual report pursuant to Section 13 and 15(d)

Balance Sheet Accounts - Equipment (Details)

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Balance Sheet Accounts - Equipment (Details) - USD ($)
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Equipment, Cost $ 689,940 $ 679,135
Accumulated Depreciation 598,706 585,558
Equipment, Net 91,234 93,577
Depreciation expense 40,000 58,000
Computers and electronics    
Equipment, Cost 315,837 303,337
Accumulated Depreciation 305,420 303,337
Equipment, Net 10,417  
Furniture and fixtures    
Equipment, Cost 36,795 36,795
Accumulated Depreciation 36,795 36,795
Demonstration equipment    
Equipment, Cost 168,691 170,386
Accumulated Depreciation 87,874 76,809
Equipment, Net 80,817 93,577
Manufacturing equipment    
Equipment, Cost 88,742 88,742
Accumulated Depreciation 88,742 88,742
Tools and parts    
Equipment, Cost 11,422 11,422
Accumulated Depreciation 11,422 11,422
Assets under capital lease    
Equipment, Cost 68,453 68,453
Accumulated Depreciation $ 68,453 $ 68,453