Inventor
BOOMGAARDEN STEVEN L
US10 patents
Patents
10 patentsUS5943730AAug 31, 1999
Scrubber vac-fan seal
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US5455985AOct 10, 1995
Steerable side squeegees
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US6092261AJul 25, 2000
Storage system for vacuum pickup hose
TENNANT CO23 citations92
US5983447ANov 16, 1999
Counterbalance system for pickup hose support
TENNANT CO26 citations92
US5901407AMay 11, 1999
Scrubbing machine with means for continuously cleaning a filter
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US5244003ASep 14, 1993
Telescopic drain hose
TENNANT CO43 citations92
US6389641B1May 21, 2002
Dual mode debris pickup machine
TENNANT CO24 citations91
US7086118B2Aug 8, 2006
Street sweeper with vacuumized dust control
TENNANT CO17 citations83
US5996174ADec 7, 1999
Hand control for manipulating vacuum pickup hose
TENNANT CO14 citations71
US7120961B2Oct 17, 2006
Brush wear adjustment system and method
TENNANT CO6 citations57