Granted Patent
Utility
US 4,654,029 · App. 06/449,372
Electronic drainage system
Inventor:
Nicholas F. D'Antonio
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Dec 13, 1982
Inventor
Nicholas F. D'Antonio
Assignee (at issue)
Howmedica 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.