Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Solar Turbines (Details)

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Intangible Assets - Solar Turbines (Details) - Solar Turbines Incorporated - USD ($)
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Intangible Assets    
Royalties earned $ 26,400 $ 33,200
Unpaid earned royalties $ 52,500 $ 26,100