Granted Patent
Utility
US 5,072,831 · App. 07/170,624
Rub-off advertising sampler and method of manufacture
Inventors:
Michael A. Parrotta, Frederick Grainger, Donald W. Schoenleber
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Mar 17, 1988
Inventors
Michael A. Parrotta
Frederick Grainger
Donald W. Schoenleber
Assignee (at issue)
Webcraft Technologies, Inc.
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.