Granted Patent
Utility
US 4,698,060 · App. 06/642,563
Pressure regulation system
Inventors:
Nicholas F. D'Antonio, Nicholas J. D'Antonio
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Aug 20, 1984
Inventors
Nicholas F. D'Antonio
Nicholas J. D'Antonio
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.