RB

Robert C. Berfield

SV Shop Vac: 138 patents #1 of 59Top 2%
MC Mcculloch: 1 patents #20 of 34Top 60%
Overall (All Time): #6,502 of 4,157,543Top 1%
147
Patents All Time

Issued Patents All Time

Showing 25 most recent of 147 patents

Patent #TitleCo-InventorsDate
7513464 Hose holder 2009-04-07
7395601 Rotary flail feeding device 2008-07-08
7191989 Hose holder 2007-03-20
7100776 Wall mounted tool holder 2006-09-05
D525114 Tool holder 2006-07-18
6530116 Vacuum cleaner with muffled detachable blower exhaust Ronald Griffin, Craig A. Seasholtz 2003-03-11
6508618 Pump having dynamic shaft seal 2003-01-21
6499182 Convertible blower port for vacuum cleaner Ronald Griffin, Kevin D. Fry, Randy L. Buss 2002-12-31
6494544 Axle and wheel mounting system for a wet/dry vacuum cleaner Ronald Griffin, David Martinez 2002-12-17
6485259 Vaneless impeller housing for a vacuum cleaner 2002-11-26
6481107 Rotary flail feeding device and method 2002-11-19
6481049 Self-evacuating vacuum cleaner 2002-11-19
6478342 Swivel coupling for a hose 2002-11-12
6451078 Fitting for vacuum bags Robert L. Crevling, Jr. 2002-09-17
6440227 Nozzle and method providing increased liquid lift height for a wet/dry vacuum cleaner Alan D. Kaufman 2002-08-27
6440191 Vacuum cleaner filter assembly Li H. Liu 2002-08-27
6385853 Rotary flail feeding device 2002-05-14
6381803 Vacuum cleaner Ronald Griffin, Mark E. Baer 2002-05-07
6378164 Pump inlet fitting 2002-04-30
6367118 Vacuum cleaner hose clip 2002-04-09
6358005 Vaneless impeller housing for a vacuum cleaner 2002-03-19
6347430 Self-evacuating vacuum cleaner Randy L. Buss 2002-02-19
6309469 Debris access door Charles M. Storrs 2001-10-30
6264427 Vaneless impeller housing for a vacuum cleaner 2001-07-24
6249933 Pump having sealless shaft 2001-06-26