Patents by Inventor Geoffrey C. Parker

Geoffrey C. Parker 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).

  • Roof structure
    Patent number: 4856236
    Abstract: Structure for use on a roof consisting of a plurality of standard elements in the general form of planks that lock together which are formed with a dense outer impermeable skin and a lightweight insulating interior.
    Type: Grant
    Filed: January 12, 1988
    Date of Patent: August 15, 1989
    Assignee: Parker Limited
    Inventor: Geoffrey C. Parker
  • Roof structure
    Patent number: 4741131
    Abstract: Structure for use on a roof consisting of a plurality of standard elements in the general form of planks that lock together which are formed with a dense outer impermeable skin and a lightweight insulating interior.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: May 3, 1988
    Inventor: Geoffrey C. Parker