Granted Patent
Utility
US 6,136,077 · App. 09/187,013
Steam absorption apparatus
Inventor:
David R. Walker
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Nov 5, 1998
Inventor
David R. Walker
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.