Granted Patent
Utility
US 4,891,188 · App. 07/052,057
Unplumbed sterilizer
Inventors:
Donald W. Albright, Raymond J. Miller
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: May 21, 1987
Inventors
Donald W. Albright
Raymond J. Miller
Assignee (at issue)
MDT 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.