DR

David Robertson

FG Freudenberg Oil & Gas: 1 patents #2 of 25Top 8%
HL Hayco Manufacturing Limited: 1 patents #13 of 23Top 60%
📍 East Longmeadow, MA: #11 of 107 inventorsTop 15%
🗺 Massachusetts: #15,851 of 88,656 inventorsTop 20%
Overall (All Time): #629,176 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
10948113 Longitudinal expansion joint for piping system 2021-03-16
6854606 Moveable storage and display rack for rolled flooring materials 2005-02-15
D468106 Broom and dust pan combination 2003-01-07
5802956 Method and apparatus for the removal of kraeusen in the brewing process Landry Edward Bonnette 1998-09-08
5411422 Spiral propeller having axial void 1995-05-02
5062406 Attachment for crossbow that shoots arrows to enable the crossbow to shoot slugs 1991-11-05
4345523 Railway car stabilizer 1982-08-24
4322005 Display stacker with biased pivoted trays 1982-03-30