Granted Patent
Utility
US 5,345,857 · App. 08/012,531
Thermoplastic bellows and method of forming the same
Inventor:
Patrick Murphy
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Feb 2, 1993
Inventor
Patrick Murphy
Assignee (at issue)
Osmonics, 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.