Quarterly report pursuant to Section 13 or 15(d)

PATENTS (Details)

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PATENTS (Details) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Patents    
Gross carrying amount – patents $ 8,473,000 $ 7,949,000
Accumulated amortization – patents (6,798,000) (6,565,000)
Patents, net $ 1,675,000 $ 1,384,000