Granted Patent
Utility
US 4,675,992 · App. 06/856,331
Method and apparatus for forming a smooth tube from a flat tape
Inventors:
Edward R. Byzio, Peter Stewart-Hay
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Apr 28, 1986
Inventors
Edward R. Byzio
Peter Stewart-Hay
Assignee (at issue)
Canada Wire and Cable Limited
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.