Granted Patent
Utility
US 5,322,532 · App. 08/075,225
Large size sodium bicarbonate blast media
Inventor:
Andrew D. Kurtz
Patented Case
View Patent ↗
Granted: Jun 21, 1994
Filed: Jun 10, 1993
Inventor
Andrew D. Kurtz
Assignee (at issue)
Church & Dwight Co., 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.