Patents by Inventor James P. Gregg

James P. Gregg 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).

  • Take-down rifles including a caliber exchange system
    Patent number: 8079169
    Abstract: A caliber exchange system for a firearm including a lower plate adapted for embedding within a firearm stock, an upper plate adapted to mate with the lower plate, and a receiver and integral barrel assembly attached to the upper plate to form a caliber exchange unit, the caliber exchange unit attachable and detachable from the lower plate to allow user exchange of caliber of the firearm.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: December 20, 2011
    Inventor: James P. Gregg
  • Take-down rifles including a caliber exchange system
    Publication number: 20090277067
    Abstract: A caliber exchange system for a firearm including a lower plate adapted for embedding within a firearm stock, an upper plate adapted to mate with the lower plate, and a receiver and integral barrel assembly attached to the upper plate to form a caliber exchange unit, the caliber exchange unit attachable and detachable from the lower plate to allow user exchange of caliber of the firearm.
    Type: Application
    Filed: March 18, 2009
    Publication date: November 12, 2009
    Inventor: James P. Gregg