Granted Patent
Utility
US 4,267,272 · App. 06/091,622
Prostatic acid phosphatase immuno assay
Inventor:
Lee Josephson
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Nov 5, 1979
Inventor
Lee Josephson
Assignee (at issue)
Baxter Travenol Laboratories, 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.