Granted Patent
Utility
US 4,645,012 · App. 06/691,848
Turf aerating apparatus
Inventors:
Loren F. Hansen, Mark E. Lamb
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Jan 16, 1985
Inventors
Loren F. Hansen
Mark E. Lamb
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.