Granted Patent
Utility
US 4,296,852 · App. 05/883,655
Automatic two-way centrifugal clutch for motor driven apparatus
Inventor:
Adolf Luerken
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Mar 6, 1978
Inventor
Adolf Luerken
Assignee (at issue)
McCulloch 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.