Granted Patent
Utility
US 4,494,581 · App. 06/467,905
Isolation of forestream and midstream portions of collected urine samples
Inventor:
Marvin Gordon
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Feb 18, 1983
Inventor
Marvin Gordon
Assignee (at issue)
Whitman Medical Corporation
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.