Granted Patent
Utility
US 6,406,652 · App. 09/498,680
Process of making a helical ribbon
Inventors:
William F. Protz, Jr., William L. Lehman
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Feb 7, 2000
Inventors
William F. Protz, Jr.
William L. Lehman
Assignee (at issue)
Santa's Best
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.