Granted Patent
Utility
US 5,531,694 · App. 08/398,543
Needle retraction system
Inventors:
Anton H. Clemens, Victor M. Haughton
Patented Case
View Patent ↗
Granted: Jul 2, 1996
Filed: Mar 6, 1995
Inventors
Anton H. Clemens
Victor M. Haughton
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.