Granted Patent
Utility
US 4,448,449 · App. 06/260,162
Flexible piping joint and method of forming same
Inventors:
Horace P. Halling, Bernard J. Sadoff, Jr.
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: May 4, 1981
Inventors
Horace P. Halling
Bernard J. Sadoff, Jr.
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.