Quarterly report pursuant to Section 13 or 15(d)

PATENTS (Details)

v3.23.3
PATENTS (Details) - USD ($)
Sep. 30, 2023
Dec. 31, 2022
Patents    
Gross carrying amount – patents $ 8,473,000 $ 8,473,000
Accumulated amortization – patents (7,117,000) (6,881,000)
Patents, net $ 1,356,000 $ 1,592,000