Granted Patent
Utility
US 4,691,606 · App. 06/891,646
Web perforating apparatus
Inventors:
Roy A. Johnson, Robert H. Ganz
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Aug 1, 1986
Inventors
Roy A. Johnson
Robert H. Ganz
Assignee (at issue)
The Mead Corporation
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.