Granted Patent
Utility
US 6,053,288 · App. 09/338,830
Brake mechanism for control of vertical motion of a vertically aligned adjustable drain tube
Inventor:
Paul Okpokowuruk
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Jun 23, 1999
Inventor
Paul Okpokowuruk
Assignee (at issue)
Alemite LLC
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.