Patents by Inventor Mark D. Hatfield

Mark D. Hatfield 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).

  • Device for holding a workpiece adjacent a ceiling support
    Patent number: 6957515
    Abstract: A device for holding a work piece over head, wherein the device is employed between a first wall support and a second wall support and the wall support are interconnected to support a ceiling support, which includes a first removable support connector for connecting the device to the first wall support, a first cross member hingedly connected to the first removable support connector at one end and having another end which is elongated and includes an inwardly extending opening thereby forming a female end, a second removable support connector for connecting the device to the second wall support generally opposing the first wall support, and a second cross member connected hingedly connected to the first removable support connector at one end and having another elongated male end which is of a size and configuration to be slidably received within the female end.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: October 25, 2005
    Inventor: Mark D. Hatfield
  • Rifle magazine
    Patent number: D678455
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: March 19, 2013
    Inventor: Mark D. Hatfield