Inventor

FRISK RICHARD A

US3 patents

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

CISCO TECH INC

2 patents

US7701971B2Apr 20, 2010

System and method for providing a compatibility feature in a session initiation protocol (SIP) environment

CISCO TECH INC1 citations45

US7778274B2Aug 17, 2010

System and method for providing a compatibility feature in a session initiation protocol (SIP) environment

CISCO TECH INC0 citations34

HARTON DAVID C

1 patent

US8254552B2Aug 28, 2012

System and method for providing a recovery mode in a session initiation protocol (SIP) environment

HARTON DAVID C12 citations72