TH

Thomas E. Helfrich

SD Square D: 2 patents #240 of 756Top 35%
AS Aktiebolaget Skf: 1 patents #798 of 1,598Top 50%
Overall (All Time): #1,641,303 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5829890 Bearing assembly axial load application Bernhard Bauer, Burkhard Buchheim, Christian Knoche, Lothar Meidl, Arno Stubenrauch +1 more 1998-11-03
5465011 Uninterruptible power supply with improved output regulation Frank D. Miller 1995-11-07
5461263 Method of phase synchronization between two AC signals 1995-10-24