Granted Patent
Utility
US 6,134,856 · App. 09/245,529
Roll roofing membrane
Inventors:
Amir Khan, Joseph Randall Bruns, Richard Rains, Michael Di Stefano
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Feb 5, 1999
Inventors
Amir Khan
Joseph Randall Bruns
Richard Rains
Michael Di Stefano
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.