Assignee
DANISH INTERNATIONAL INC
US·3 granted patents·337 citations·filing 1990–1992
Top patents by PatentIndex Score
3 records- 0190US5339358ATelephone keypad matrixDANISH INTERNATIONAL INC·Filed 1992·Granted Aug 16, 1994·179 cites·4 claims
- 0289US5392338AEntry of alphabetical characters into a telephone system using a conventional telephone keypadDANISH INTERNATIONAL INC·Filed 1992·Granted Feb 21, 1995·101 cites·2 claims
- 0369US5117455ATelephone keypad matrixDANISH INTERNATIONAL INC·Filed 1990·Granted May 26, 1992·57 cites·16 claims
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