Annual report pursuant to Section 13 and 15(d)

PATENTS (Details)

v3.19.1
PATENTS (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Disclosure Patents Details Abstract    
Gross carrying amount $ 7,682,000 $ 7,571,000
Accumulated amortization (5,693,000) (5,402,000)
Patents, net $ 1,989,000 $ 2,169,000