Granted Patent
Utility
US 5,231,918 · App. 07/718,793
Appliance for brewing coffee or tea
Inventor:
Stanley E. Grzywna
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Jun 21, 1991
Inventor
Stanley E. Grzywna
Assignee (at issue)
MR.COFFEE CO., 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.