Inventor
D COSTA JOSEPH F
US9 patents
⚠️ This page may combine multiple inventors who share the name “D COSTA JOSEPH F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TENNANT CO
8 patentsUS6421870B1Jul 23, 2002
Stacked tools for overthrow sweeping
TENNANT CO132 citations96
US6286169B1Sep 11, 2001
Tessellated cylindrical brush
TENNANT CO20 citations92
US5893189AApr 13, 1999
Sweeping machine with hopper shelf
TENNANT CO20 citations91
US5991953ANov 30, 1999
Sweeping machine with multiple position front flap
TENNANT CO28 citations89
US6035479AMar 14, 2000
Sweeper with auxiliary brush and auxiliary lip
TENNANT CO31 citations88
US6018844AFeb 1, 2000
Composite side skirt for powered sweeper
TENNANT CO28 citations86
US6073295AJun 13, 2000
Sweeping machine with movable recirculation flap
TENNANT CO16 citations81
US6449793B2Sep 17, 2002
Tessellated cylindrical brush
TENNANT CO12 citations73