Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Solar Turbines (Details)

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Intangible Assets - Solar Turbines (Details) - USD ($)
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Intangible Assets    
Years subject to payment of per-unit royalty fees 17 years  
Royalties earned $ 23,100 $ 22,600
Unpaid earned royalties $ 99,500 $ 76,400