Granted Patent
Utility
US 4,495,067 · App. 06/428,436
Apparatus for preparation of infusion grade water
Inventors:
Elias Klein, Douglas J. Beach
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Sep 29, 1982
Inventors
Elias Klein
Douglas J. Beach
Assignee (at issue)
Tracor, 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.