SP

Steve Pfiefer

TJ Transcrypt Internationall E. F. Johnson: 1 patents #4 of 9Top 45%
Overall (All Time): #3,647,641 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5896560 Transmit control system using in-band tone signalling Donald R. Bauman, James K. Lyon 1999-04-20