DS

Dick G. Schalk

RI Rodgers Instrument: 2 patents #1 of 7Top 15%
📍 Portland, OR: #4,612 of 9,213 inventorsTop 55%
🗺 Oregon: #12,654 of 28,073 inventorsTop 50%
Overall (All Time): #2,307,061 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5091613 Pedal board for musical instruments Mark W. Rohde, Roger T. Brown, George T. Kirkwood, Robert L. Smythe 1992-02-25
5087798 Illuminated elastomeric rocker switch assembly Mark W. Rohde, George T. Kirkwood 1992-02-11