Granted Patent
Utility
US 5,495,989 · App. 08/287,244
Apparatus for milling clay without substantial generation of powder
Inventor:
Maynard Teppo
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Aug 8, 1994
Inventor
Maynard Teppo
Assignee (at issue)
American Colloid Company
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.