Assignee
GRATISTELEFON SVENSKA AB
US·2 granted patents·169 citations·filing 1995–1998
Technology mixH04M2
Top patents by PatentIndex Score
2 records- 0179US6301342B1Method relating to telephone communications including the transmission of advertising messagesGRATISTELEFON SVENSKA AB·Filed 1998·Granted Oct 9, 2001·169 cites·6 claims
- 0220US6140912AMethod and a device for telecommunicationGRATISTELEFON SVENSKA AB·Filed 1995·Granted Oct 31, 2000·0 cites·14 claims
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