WS

William Joseph Sigmund

AT AT&T: 1 patents #552 of 1,365Top 45%
Overall (2017): #197,122 of 506,227Top 40%
1
Patents 2017

Issued Patents 2017

Patent #TitleCo-InventorsDate
9544437 Visual voicemail method for managing deleted messages Michael Robert Zubas, Brian Keith Rainer 2017-01-10