Granted Patent
Utility
US 5,301,561 · App. 07/706,212
Method and apparatus for taking a fluid sample
Inventor:
Haraldur Karlsson
Patented Case
View Patent ↗
Granted: Apr 12, 1994
Filed: May 28, 1991
Inventor
Haraldur Karlsson
Assignee (at issue)
Energy Ventures, 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.