Granted Patent
Utility
US 4,850,421 · App. 07/197,276
Shaking apparatus
Inventors:
Frank V. Bailey, Lee A. Woodward
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: May 23, 1988
Inventors
Frank V. Bailey
Lee A. Woodward
Assignee (at issue)
Outboard Marine Corporation
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.