Inventor
ENGEL GREGORY J
US9 patents
⚠️ This page may combine multiple inventors who share the name “ENGEL GREGORY J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TENNANT CO
8 patentsUS5455985AOct 10, 1995
Steerable side squeegees
TENNANT CO60 citations93
US6428590B1Aug 6, 2002
Filter system for mobile debris collection machine
TENNANT CO34 citations91
US6389641B1May 21, 2002
Dual mode debris pickup machine
TENNANT CO24 citations91
US5647093AJul 15, 1997
Sweeper with dual seal filter
TENNANT CO29 citations87
US7086118B2Aug 8, 2006
Street sweeper with vacuumized dust control
TENNANT CO17 citations83
US6966097B2Nov 22, 2005
Street sweeper with dust control
TENNANT CO15 citations76
US5996173ADec 7, 1999
Increased litter storage for vacuum trash collector
TENNANT CO13 citations72
US7124463B2Oct 24, 2006
Conveyor lip for motorized street sweeper
TENNANT CO6 citations58