Granted Patent
Utility
US 5,944,146 · App. 08/749,799
Brake mechanism for control of vertical motion of a vertically aligned adjustable drain tube
Inventor:
Paul Okpokowuruk
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Nov 15, 1996
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.