Granted Patent
Utility
US 4,329,985 · App. 06/113,247
Vein distention system
Inventor:
Lawrence I. Bonchek
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Jan 18, 1980
Inventor
Lawrence I. Bonchek
Assignee (at issue)
Shiley Incorporated
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.