Granted Patent
Utility
US 4,610,672 · App. 06/743,127
Syringe locking device
Inventors:
Paul R. Ewalt, Harold G. Leigh, Richard W. Gilson
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Jun 10, 1985
Inventors
Paul R. Ewalt
Harold G. Leigh
Richard W. Gilson
Assignee (at issue)
Sherwood Medical Company
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.