Granted Patent
Utility
US 6,609,340 · App. 09/848,398
Concrete structures and methods of forming the same using extenders
Inventors:
James Daniel Moore, Jr., John A. Spragge, Brian L. Smith
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: May 3, 2001
Inventors
James Daniel Moore, Jr.
John A. Spragge
Brian L. Smith
Assignee (at issue)
ECO-Block, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.