Donald A. Calleson

Person

  • Winston-Salem, NC, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Cigarette filter

    • Patent number 5,568,819
    • Issue date Oct 29, 1996
    • R. J. Reynolds Tobacco Company
    • Jeffery S. Gentry
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES