Granted Patent
Utility
US 6,615,849 · App. 09/714,608
Tank cleaning system
Inventors:
John William Gilman, Edward S. Kennedy
Patented Case
View Patent ↗
Granted: Sep 9, 2003
Filed: Nov 16, 2000
Inventors
John William Gilman
Edward S. Kennedy
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.