WT

Walter H. Trask

RC Riggers Manufacturing Co: 1 patents #3 of 5Top 60%
📍 Pasco, WA: #52 of 159 inventorsTop 35%
🗺 Washington: #35,300 of 76,902 inventorsTop 50%
Overall (All Time): #2,332,911 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4863044 Latticework construction for cranes Neil F. Lampson 1989-09-05
4647116 Crawler suspension system — 1987-03-03