Patents Assigned to Indigrade Limited
  • Road studs
    Patent number: 4127348
    Abstract: The body of a road stud has oppositely directed presented faces each of which includes a central portion in which reflective elements are disposed and outer protective skirt portions which are inclined to the horizontal at a smaller acute angle than the central portion and project outwardly beyond the central portion.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: November 28, 1978
    Assignee: Indigrade Limited
    Inventor: John Roberts