Inventor
BUTZ GREG
US4 patents
⚠️ This page may combine multiple inventors who share the name “BUTZ GREG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SBC TECHN RES INC
3 patentsUS6819933B1Nov 16, 2004
Communications system having pre-defined calling group
SBC TECHN RES INC16 citations89
US6073023AJun 6, 2000
Communications system having pre-defined calling group
SBC TECHN RES INC19 citations80
US7200415B2Apr 3, 2007
Communications system having pre-defined calling group
SBC TECHN RES INC1 citations59