P
PatentIndex
Search
Landscape
Sign in
Inventor
LANTTO SVEN JOERGEN
SE
2 patents
Patents
2 patents
US6205328B1
Mar 20, 2001
Method for providing supplementary services to a mobile station by sending DTMF tones to a remote party of an active call
ERICSSON TELEFON AB L M
8 citations
68
US5724664A
Mar 3, 1998
Method for signalling in a telecommunication system
ERICSSON TELEFON AB L M
7 citations
65