Granted Patent
Utility
US 4,218,041 · App. 05/861,576
Low noise slide valve
Inventor:
Georg Bernat
Patented Case
View Patent ↗
Granted: Aug 19, 1980
Filed: Dec 19, 1977
Inventor
Georg Bernat
Assignee (at issue)
ITT Industries
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.