Granted Patent
Utility
US 6,010,575 · App. 08/768,602
Multiple tip cleaning process for pipes
Inventor:
Peggy L. Sims
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Dec 18, 1996
Inventor
Peggy L. Sims
Assignee (at issue)
Praxair Technology, 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.