Granted Patent
Utility
US 5,319,908 · App. 08/045,153
Seamless tube useful to make roofing battens for incorporation within a building structure system
Inventors:
Donald L. Van Erden, Juergen O. Rathgeber, Parimal M. Vadhar, John P. Wojcik
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Apr 12, 1993
Inventors
Donald L. Van Erden
Juergen O. Rathgeber
Parimal M. Vadhar
John P. Wojcik
Assignee (at issue)
ILLINOIS TOOL WORKS 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.