Granted Patent
Utility
US 4,650,469 · App. 06/769,879
Drug delivery system
Inventors:
Harvey F. Berg, Lyle V. Peterson, James E. Leslie, Phong D. Doan
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Aug 27, 1985
Inventors
Harvey F. Berg
Lyle V. Peterson
James E. Leslie
Phong D. Doan
Assignee (at issue)
Deltec Systems, 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.