Granted Patent
Utility
US 5,232,010 · App. 07/669,202
Drain valve
Inventors:
Mike M. Rozenblatt, Andrew Volpe
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Mar 14, 1991
Inventors
Mike M. Rozenblatt
Andrew Volpe
Assignee (at issue)
MAG Aerospace Industries, 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.