Granted Patent
Utility
US 5,451,002 · App. 08/101,464
Multi-lance for cleaning tube bundles
Inventor:
Jim E. Amuny
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Aug 2, 1993
Inventor
Jim E. Amuny
Assignee (at issue)
American Mechanical Services, 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.