Annual report [Section 13 and 15(d), not S-K Item 405]

Patents (Details)

v3.25.0.1
Patents (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Patents    
Gross carrying amount $ 8,473,000 $ 8,473,000
Accumulated amortization (7,268,000) (7,147,000)
Patents, net $ 1,205,000 $ 1,326,000