Quarterly report pursuant to Section 13 or 15(d)

PATENTS (Details)

v3.19.3
PATENTS (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Patents, net $ 1,832,000 $ 1,989,000
Patents [Member]    
Gross carrying amount - patents 7,737,000 7,682,000
Accumulated amortization - patents (5,905,000) (5,693,000)
Patents, net $ 1,832,000 $ 1,989,000