Granted Patent
Utility
US 4,416,873 · App. 06/449,117
Combined allantoin-hydrolyzed animal protein skin preparation
Inventors:
Eugene Puchalski, Frances A. Donahue, Richard P. Dixon
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Dec 13, 1982
Inventors
Eugene Puchalski
Frances A. Donahue
Richard P. Dixon
Assignee (at issue)
Charles of the Ritz Group Ltd.
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.