Granted Patent
Utility
US 6,190,754 · App. 08/997,744
Variegated shingle and method of manufacture
Inventors:
Alfredo A. Bondoc, Frederick W. Sieling, William R. Carroll
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Dec 24, 1997
Inventors
Alfredo A. Bondoc
Frederick W. Sieling
William R. Carroll
Assignee (at issue)
Building Materials Corporation of America
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.