Patent suit threatens system to keep Boston subway trolleys from crashing
(universalhub.com)
A company that sells a system aimed at keeping trains from slamming into each other yesterday filed a patent suit against the MBTA and the company it hired to install a system aimed at keeping Green Line trolleys from slamming into each other.
A company that sells a system aimed at keeping trains from slamming into each other yesterday filed a patent suit against the MBTA and the company it hired to install a system aimed at keeping Green Line trolleys from slamming into each other.