Patents Assigned to Western Industries (Proprietary) Limited
  • Electrical detective circuits
    Patent number: 3952977
    Abstract: A detective circuit for railway points composed of three track sections connected together at a junction or for a railway crossing composed of four track sections connected together at a junction.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: April 27, 1976
    Assignee: Western Industries (Proprietary) Limited
    Inventor: Dirk J. Vermeulen