LS

Leonard J. Sieghartner

RR Roy E. Roth: 7 patents #1 of 5Top 20%
Overall (All Time): #763,429 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5934683 Rotary seal assembly having grooved seal facing 1999-08-10
5525039 Hermetically sealed magnetic drive pump 1996-06-11
5238253 Regenerative turbine flow inducer for double or tandem mechanical seals 1993-08-24
5137418 Floating self-centering turbine impeller 1992-08-11
4479756 Multi-stage pump 1984-10-30
4299536 Multi-stage pumps Larry Barnhouse 1981-11-10
4248571 Centrifugal impellers 1981-02-03