Granted Patent
Utility
US 5,093,083 · App. 07/210,557
Method for controlling the environment in a liquid diluting and transfer valve assembly
Inventor:
Charles R. Preston
Patented Case
View Patent ↗
Granted: Mar 3, 1992
Filed: Jun 22, 1988
Inventor
Charles R. Preston
Assignee (at issue)
Serono-Baker Diagnostics, 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.