Granted Patent
Utility
US 5,472,421 · App. 08/354,677
Pill crushing syringe with plug to impede crushed pill particles from prematurely entering the catheter
Inventors:
Jeffrey D. Klearman, Matt Roth, Jerry Roth, Robert Bronson
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Dec 13, 1994
Inventors
Jeffrey D. Klearman
Matt Roth
Jerry Roth
Robert Bronson
Assignee (at issue)
Lake Medical Products, 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.