Granted Patent
Utility
US 4,055,501 · App. 05/649,881
Fluid collection device with phase partitioning means
Inventor:
William D. Cornell
Patented Case
View Patent ↗
Granted: Oct 25, 1977
Filed: Jan 16, 1976
Inventor
William D. Cornell
Assignee (at issue)
Sherwood Medical Industries 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.