Granted Patent
Utility
US 6,804,922 · App. 10/163,730
Integral composite building material and uses therefor
Inventor:
William F. Egan
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Jun 6, 2002
Inventor
William F. Egan
Assignee (at issue)
CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
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.