Richard Grandoff

Person

  • Sandown, MA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Retractable marker pen and inks therefor

    • Patent number 5,174,814
    • Issue date Dec 29, 1992
    • Dennison Manufacturing Company
    • Ann P. Burwell
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES