49311-Urban and suburban passenger railway transportation by underground, metro and similar systems

Title Company Company Number Date filed Status Publication number
Monitoring track condition London Underground Limited 01900907 1995-09-26 Terminated GB2305796
Improvements in or relating to doors London Underground Limited 01900907 1992-11-27 Granted GB2274092
Improved adaptive audio systems Docklands Light Railway Limited;Trim, Richard Morris 02052677 1995-10-06 Terminated GB2306086
Controlling audio level in dependence on ambient noise Docklands Light Railway Limited;Gilden Research Ltd 02052677 1994-05-04 Ceased GB2289583

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