Inventor
POORTVLIET ROBERT J
US6 patents
⚠️ This page may combine multiple inventors who share the name “POORTVLIET ROBERT J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALLSTEEL INC
3 patentsUS5064247ANov 12, 1991
Wire rod office furniture stacking chair
ALLSTEEL INC115 citations95
US5110186AMay 5, 1992
Back assembly for wire rod office furniture stacking chair
ALLSTEEL INC88 citations94
US5201108AApr 13, 1993
Method of assembling office furniture wire rod stacking chair
ALLSTEEL INC17 citations80