Inventor
WELLENS RICHARD W
US6 patents
⚠️ This page may combine multiple inventors who share the name “WELLENS RICHARD W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TENNANT CO
5 patentsUS7665174B2Feb 23, 2010
Cleaning head for use in a floor cleaning machine
TENNANT CO54 citations95
US6662402B2Dec 16, 2003
Apparatus for cleaning fabrics, floor coverings, and bare floor surfaces utilizing a soil transfer cleaning medium
TENNANT CO83 citations95
US7967914B2Jun 28, 2011
Method and apparatus for cleaning fabrics, floor coverings, and bare floor surfaces utilizing a soil transfer medium
TENNANT CO36 citations90
US7448114B2Nov 11, 2008
Floor sweeping and scrubbing machine
TENNANT CO34 citations86
US9498099B2Nov 22, 2016
Surface maintenance vehicle with compact side brush assembly
TENNANT CO5 citations71