AKTIEBOLAGET SIWERTELL

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4717014 Screw conveyorExpiredSep 26, 86Jan 05, 88[B65G]
4702367 Loading device for a belt conveyorExpiredSep 24, 85Oct 27, 87[B65G]
4334818 Final unloading apparatusExpiredJul 06, 79Jun 15, 82[B65G]
4286909 Apparatus for unloading bulk material from a storage spaceExpiredApr 11, 79Sep 01, 81[B65G]
4234075 Apparatus for sealing a connection between two mutually shiftable componentsExpiredApr 25, 79Nov 18, 80[B65G]

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