EJ

Ernest V. Johnson

QU Quantum: 1 patents #325 of 703Top 50%
Overall (All Time): #2,288,966 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5444587 Method and apparatus for attaching metallic and ceramic materials Allen R. Creamer, Edward Mills 1995-08-22
4949194 Ceramic support arm for movably positioning transducers John MacPherson 1990-08-14