Granted Patent
Utility
US 6,691,471 · App. 10/015,052
Mortarless wall structure
Inventor:
Raymond R. Price
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Dec 11, 2001
Inventor
Raymond R. Price
Assignee (at issue)
Alliance Concrete Concepts Inc.
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.