Assignee

AASTRA TECHNOLOGIES INC

CA·2 granted patents·57 citations·filing 1994–1995

Technology mixH04M2 H04N1

Top patents by PatentIndex Score

2 records

0161US5546451ACall waiting cancellation deviceAASTRA TECHNOLOGIES INC·Filed 1995·Granted Aug 13, 1996·42 cites·22 claims
0242US6061438AExtension-in-use exclusion apparatusAASTRA TECHNOLOGIES INC·Filed 1994·Granted May 9, 2000·15 cites·20 claims

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