Patents by Inventor Wirt G. Greenan

Wirt G. Greenan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Safety shoes
    Patent number: 4011667
    Abstract: In a welt shoe having a resilient cushion outsole there is provided a crush-proof safety box toe incorporated in the toe portion of the shoe and associated with a stress-distributing plate anchored above the outsole and beneath the insole in position to distribute stresses exerted by the safety box toe when it receives a blow.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: March 15, 1977
    Assignee: Safety Box Toe Company
    Inventor: Wirt G. Greenan