AT&T Company and AT&T Bell Laboratories

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4672198 Signal sampler microbending fiber test clipExpiredJan 24, 86Jun 09, 87[G01N]
4672658 Spread spectrum wireless PBXExpiredOct 23, 86Jun 09, 87[H04M, H04L, H04Q, H04J]
4667331 Composite cavity laser utilizing an intra-cavity electrooptic waveguide deviceExpiredJan 20, 84May 19, 87[H01L]

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