Granted Patent
Utility
US 5,000,486 · App. 07/449,762
Fragrance enhanced scratch-off layer for game cards
Inventors:
Louis Rua, Jr., Carl Schaab
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Dec 12, 1989
Inventors
Louis Rua, Jr.
Carl Schaab
Assignee (at issue)
501 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.