Granted Patent
Utility
US 4,397,331 · App. 05/947,265
Fluid flow control valve with maximized noise reduction
Inventor:
Lewis A. Medlar
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Sep 29, 1978
Inventor
Lewis A. Medlar
Assignee (at issue)
Honeywell Limited
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.