Granted Patent
Utility
US 5,680,903 · App. 08/798,573
Lawn aerator having tine assemblies spaced along a shaft
Inventor:
William H. Oliver
Patented Case
View Patent ↗
Granted: Oct 28, 1997
Filed: Feb 11, 1997
Inventor
William H. Oliver
Assignee (at issue)
BlueBird International, 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.