FH

Frederic J. Hirzel

VT Vocal Technologies: 2 patents #1 of 2Top 50%
📍 Cupertino, CA: #140 of 688 inventorsTop 25%
🗺 California: #4,287 of 28,521 inventorsTop 20%
Overall (2003): #67,870 of 273,478Top 25%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6643270 Method of compensating for systemic impairments in a telecommunications network Victor Demjanenko 2003-11-04
6633604 Method of improving echo canceller training in modems and of discovering characteristics of a PCM channel Victor Demjanenko 2003-10-14