Granted Patent
Utility
US 4,533,294 · App. 06/506,150
High speed centrifugal pump and method for operating same at reduced noise levels
Inventor:
Hasan F. Onal
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Jun 20, 1983
Inventor
Hasan F. Onal
Assignee (at issue)
Dresser Industries, 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.