Granted Patent
Utility
US 4,133,409 · App. 05/717,067
Vibrator hold-down plate
Inventors:
Joseph F. Mifsud, John W. Bedenbender
Patented Case
View Patent ↗
Granted: Jan 9, 1979
Filed: Aug 24, 1976
Inventors
Joseph F. Mifsud
John W. Bedenbender
Assignee (at issue)
Exxon Production Research Company
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.