Granted Patent
Utility
US 4,926,698 · App. 07/318,696
Dual wedge flow element
Inventor:
Raymond E. Owen
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Mar 3, 1989
Inventor
Raymond E. Owen
Assignee (at issue)
Process Automation Business, Inc.
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.