Patents Assigned to Mono Concrete Limited
  • Paving block
    Patent number: D260185
    Type: Grant
    Filed: November 28, 1978
    Date of Patent: August 11, 1981
    Assignee: Mono Concrete Limited
    Inventor: Geoffrey A. Griffiths
  • Paving block
    Patent number: D260935
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: September 22, 1981
    Assignee: Mono Concrete Limited
    Inventor: Thomas Pratt, deceased