RJ

Roy B. Johnson

RI Ristvedt-Johnson: 3 patents #2 of 3Top 70%
YI York Industries: 2 patents #1 of 9Top 15%
Overall (All Time): #895,193 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
4781102 Locking, bearing and actuating apparatus Joseph E. Scerbo 1988-11-01
4549561 Coin handling machine Victor G. Ristvedt 1985-10-29
4534269 Locking, bearing and actuating apparatus Joseph E. Scerbo 1985-08-13
4531531 Coin handling machine Victor G. Ristvedt 1985-07-30
4444212 Coin handling machine Victor G. Ristvedt 1984-04-24
4234003 Coin handling machine Victor G. Ristvedt 1980-11-18