Granted Patent
Utility
US 4,615,341 · App. 06/274,811
Syringe device for physiological fluid sampling
Inventors:
Willis L. Marzolf, Michael Snyder
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Jun 18, 1981
Inventors
Willis L. Marzolf
Michael Snyder
Assignee (at issue)
Syringe 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.