Inventor

IFFLAND FREDERICK C

US3 patents

⚠️ This page may combine multiple inventors who share the name “IFFLAND FREDERICK C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ALSTON DOUGLAS B

1 patent

US8139745B2Mar 20, 2012

Calling party ringtone selection in telephone system

ALSTON DOUGLAS B5 citations69

KAFKA HENRY J

1 patent

US8477758B2Jul 2, 2013

Voice over network (VoN)/voice over internet protocol (VoIP) architect having hotline and optional tie line

KAFKA HENRY J4 citations57

AT & T IP I LP

1 patent

US9118510B2Aug 25, 2015

Voice over network (VoN)/voice over internet protocol (VoIP) architect having hotline and optional tie line

AT & T IP I LP0 citations50