Granted Patent
Utility
US 4,332,249 · App. 06/174,548
Filter and valve assembly for hypodermic syringe
Inventor:
Joel A. Joslin
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Aug 1, 1980
Inventor
Joel A. Joslin
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.