Granted Patent
Utility
US 4,338,294 · App. 05/641,445
Antiperspirant compositions and methods for their preparation
Inventor:
Rolf Mast
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Dec 17, 1975
Inventor
Rolf Mast
Assignee (at issue)
Armour-Dial, 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.