Granted Patent
Utility
US 4,201,620 · App. 05/964,328
Web rolling apparatus
Inventors:
Louis Platt, Thomas S. Poteet
Patented Case
View Patent ↗
Granted: May 6, 1980
Filed: Nov 29, 1978
Inventors
Louis Platt
Thomas S. Poteet
Assignee (at issue)
Phillips Petroleum Company
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.