Marshall John Ryan

Person

  • Palatine, IL, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Sheet metal bending apparatus

    • Patent number 4,045,989
    • Issue date Sep 6, 1977
    • The Lockformer Company
    • Marshall John Ryan
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...