Granted Patent
Utility
US 6,170,109 · App. 09/311,377
Automatic machines for cleaning outer wall of a high-rise building
Inventors:
Mongkol Jesadanont, Apijade Jesadanont, Sukanya Jesadanont
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: May 13, 1999
Inventors
Mongkol Jesadanont
Apijade Jesadanont
Sukanya Jesadanont
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.