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Income Taxes (Details) - Schedule of Deferred Tax Assets and Liabilities - USD ($)
Mar. 31, 2021
Mar. 31, 2020
Schedule of Deferred Tax Assets and Liabilities [Abstract]    
Net operating loss carryforwards $ 849,387 $ 845,898
Tax credits 329,032 329,032
Charitable contributions 716 126
Legal damages 1,243,370 1,194,268
Allowance for doubtful accounts 1,576 1,575
Reserve for inventory obsolescence 120,815 115,517
Inventory capitalization (Net of section481A) 0 48,750
Vacation accrual 87,579 76,878
Warranty reserve 19,068 24,938
Deferred revenues 101,514 99,197
Stock options 15,689 15,683
AMT credit 0 0
Gain on Sale of Asset 345 0
Depreciation 5,949 (3,849)
Deferred tax asset 2,775,040 2,748,013
Less valuation allowance (100,000) (100,000)
Deferred tax asset, net $ 2,675,040 $ 2,648,013