Granted Patent
Utility
US 6,553,602 · App. 09/486,909
Device for pipeline interior cleaning
Inventors:
Peter Skarupa, Anton Zelenaj, Pavol Simko, Peter Jaras, Pavol Kudlac
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: May 23, 2000
Inventors
Peter Skarupa
Anton Zelenaj
Pavol Simko
Peter Jaras
Pavol Kudlac
Assignee (at issue)
Slovensky Plynarensky Priemysel, S.P.
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.