Granted Patent
Utility
US 5,861,563 · App. 08/822,585
Automatic closed tube sampler
Inventors:
Robert R. Boyd, Brad W. Filkins, Gregory Gates, Mark E. Holubar, Steven Zimmerman, Mark Montognese, Douglas P. Walter, Lindsay Wert
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Mar 20, 1997
Inventors
Robert R. Boyd
Brad W. Filkins
Gregory Gates
Mark E. Holubar
Steven Zimmerman
Mark Montognese
Douglas P. Walter
Lindsay Wert
Assignee (at issue)
Bayer Aktiengesellschaft
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.