WS

William E. Spengler

TO Tolco: 7 patents #2 of 8Top 25%
DL Dana Limited: 1 patents #464 of 1,099Top 45%
Overall (All Time): #664,260 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
6655697 Piston oil ring having land flanked by concave sidewalls Stephane Heraud 2003-12-02
D451388 Trigger sprayer 2001-12-04
D428811 Nozzle 2000-08-01
D417151 Cushion grip handle 1999-11-30
5131572 Jug and dispensing valve 1992-07-21
4940150 Modular storage rack 1990-07-10
4606477 Portable pressure sprayer William C. Ramsey 1986-08-19
4537334 Portable pressure sprayer William C. Ramsey 1985-08-27