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I wouldn't take Shimano patent filings as any kind of guide to what they will actually produce, they are well known for patenting everything they think of as a protective policy just in case somebody else finds a way to bring the idea to the market in a profitable way which has escaped the Shimano production engineers.
gbj_tester
@Dammit
https://www.pinkbike.com/news/shimano-gearbox-in-the-works-files-patents-on-hybrid-roller-chain-sequential-shifting-transmission.html?fbclid=IwAR3TX-_k_UnbMJXQGDFGxLdwQ2GEzZ6ekdnwai2mLuCf2gssoDv4xHYcqHA