Granted Patent
Utility
US 5,112,203 · App. 07/559,621
Vessel vacuum release
Inventor:
Theodore C. Neward
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Jul 30, 1990
Inventor
Theodore C. Neward
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.