TREA

Raymond A. Chapman

Follow

Person

  • Mondeor, Johannesburg, Transvaal, ZA
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Abrasive product
    • Patent number 5,453,105
    • Issue date Sep 26, 1995
    • Stewart N. Middlemiss
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Manufacture of abrasive products
    • Patent number 5,037,451
    • Issue date Aug 6, 1991
    • Richard P. Burnand
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Manufacture of abrasive products
    • Patent number 5,030,250
    • Issue date Jul 9, 1991
    • Richard P. Burnand
    • B22 - CASTING POWDER METALLURGY