Granted Patent
Utility
US 4,975,270 · App. 07/040,970
Elastomer encased active ingredients
Inventor:
Gary S. Kehoe
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Apr 21, 1987
Inventor
Gary S. Kehoe
Assignee (at issue)
Nabisco Brands, 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.