Granted Patent
Utility
US 4,742,011 · App. 06/740,918
Devices for carrying out chemical and clinical tests, and their use
Inventors:
Anthony Blake, John Coley, Ronald Smith
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: May 30, 1985
Inventors
Anthony Blake
John Coley
Ronald Smith
Assignee (at issue)
Unilever Patent Holdings B.V.
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.