RB

Robert C. Berfield

SV Shop Vac: 138 patents #1 of 59Top 2%
MC Mcculloch: 1 patents #20 of 34Top 60%
📍 Jersey Shore, PA: #1 of 25 inventorsTop 4%
🗺 Pennsylvania: #67 of 74,527 inventorsTop 1%
Overall (All Time): #6,502 of 4,157,543Top 1%
147
Patents All Time

Issued Patents All Time

Showing 26–50 of 147 patents

Patent #TitleCo-InventorsDate
6226831 Self-evacuating vacuum cleaner 2001-05-08
6151749 User-carried vacuum cleaner 2000-11-28
6119304 Self-evacuating vacuum cleaner Randy L. Buss, Marcus Rhone 2000-09-19
6112366 Outlet priming self-evacuation vacuum cleaner 2000-09-05
6107583 Switch assembly having an enlarged actuation surface 2000-08-22
6079076 Vacuum cleaner collection bag 2000-06-27
6073301 User-carried vacuum cleaner 2000-06-13
6037685 Thermal protection apparatus for electric motors 2000-03-14
6009596 Self-evacuating vacuum cleaner Randy L. Buss 2000-01-04
5982270 Thermal fuse Melvin E. Wolfe, Jr., Gary C. Berray 1999-11-09
5966775 Self-evacuating vacuum cleaner 1999-10-19
5920955 Self-evacuating vacuum cleaner 1999-07-13
5855634 Filter retainer for a vacuum cleaner 1999-01-05
5850668 Self-evacuating vacuum cleaner Randy L. Buss, Craig A. Seasholtz 1998-12-22
D395119 Dolly 1998-06-09
5743019 Rotary flail feeding device and method 1998-04-28
5715568 Vacuum apparatus having a pump for discharging liquid therefrom Craig A. Seasholtz 1998-02-10
D389962 Combined wet and dry vacuum cleaner John Griffin 1998-01-27
5704090 Bleed for a vacuum cleaner 1998-01-06
5675897 Rotary flail feeding device 1997-10-14
5647570 Vacuum cleaner motor mounting apparatus Ronald F. Meland 1997-07-15
5600866 Cleaning fluid tank assembly 1997-02-11
5555597 Apparatus for converting a vacuum cleaning device into a liquid dispensing and suctioning system 1996-09-17
5548868 Pilot and detent apparatus for a vacuum device Alan D. Kaufman 1996-08-27
5513416 Wall-mounted holder for a tank-type vacuum cleaner and attachments Louis M. Bassler 1996-05-07