Granted Patent
Utility
US 4,338,280 · App. 06/250,438
Fluid sampling
Inventors:
Paul J. Ambers, R. Barry Stevens
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Apr 2, 1981
Inventors
Paul J. Ambers
R. Barry Stevens
Assignee (at issue)
Instrumentation Laboratory Company
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.