Granted Patent
Utility
US 6,325,356 · App. 08/851,145
Long life rotary gate valve for aircraft vacuum toilet system
Inventor:
Mike M. Rozenblatt
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: May 5, 1997
Inventor
Mike M. Rozenblatt
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.