SJ

Stephen O. Jeppson

Overall (All Time): #3,958,294 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4768178 High precision radio signal controlled continuously updated digital clock Charles Clinton Conklin, Ronald W. Mongeon, David Schachter, Philip M. Spira, Paul L. Williams 1988-08-30