Granted Patent
Utility
US 6,540,829 · App. 10/087,636
Metal roofing shingle stock and method for making it
Inventors:
Jack C. Allman, Ronald J. Lewarachik, Victor J. Scaricamazza
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Mar 1, 2002
Inventors
Jack C. Allman
Ronald J. Lewarachik
Victor J. Scaricamazza
Assignee (at issue)
BASF SE
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.