CP

Charles C. Pergler

ST Steelcase: 5 patents #191 of 809Top 25%
📍 Grand Rapids, MI: #368 of 1,824 inventorsTop 25%
🗺 Michigan: #18,390 of 86,293 inventorsTop 25%
Overall (All Time): #1,064,960 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4570895 Chair control tension adjustment assembly Ronald L. Whitwam 1986-02-18
4390206 Synchrotilt chair control Frederick S. Faiks, Ronald L. Whitwam, Jack R. Knoblauch, Duane M. Beukema, Kenneth W. Hozeski 1983-06-28
4375301 Chair seat adjustment assembly Jack R. Knoblauch 1983-03-01
4214726 Chair control Alexander A. Karrip, Jack R. Knoblauch, Donald D. Korell 1980-07-29
4183581 Posture iron with safety stop Alexander A. Karrip, Joseph M. Wisniewski 1980-01-15