Curtain drawing devices, electrically operated; Door closers, electric; Electric brushes being parts of machines; Electric door openers; Electric door openers and closers; Electric pulley blocks; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Machine wheelwork; Pulleys being parts of machines; Speed governors for machines, engines and motors; Springs being parts of machines; Transmissions for machines; Window closers, electric; Window openers, ...