Granted Patent
Utility
US 5,314,556 · App. 08/077,404
Process for manufacturing reinforced roofing membranes
Inventor:
D. Mark Woiceshyn
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Jun 16, 1993
Inventor
D. Mark Woiceshyn
Assignee (at issue)
Bay Mills Ltd
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.