AUSTRALIAN AND OVERSEAS TELECOMMUNICATIONS CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5157657 Communications method for a shared-medium communications methodExpiredJan 22, 92Oct 20, 92[H04J]
5101293 Electrooptic device for modulation of intensity and phase of transmitted or reflected light at discrete operating wavelengthsExpiredJul 03, 90Mar 31, 92[H01L, G02B, G02F]
5093746 Current injection modulatorExpiredJul 03, 90Mar 03, 92[H01L, G02B, G02F]
5052008 Current injection laserExpiredSep 06, 89Sep 24, 91[H01S]
D312258 Telephone setExpiredMay 16, 89Nov 20, 90[]
4920543 Characterization of digital radio signalsExpiredMay 25, 88Apr 24, 90[H04B]
D305891 Telephone setExpiredOct 17, 88Feb 06, 90[]
D298128 Telephone setExpiredNov 24, 86Oct 18, 88[]
4766600 Characterization of digital radio signalsExpiredFeb 24, 86Aug 23, 88[H04B]

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