Granted Patent
Utility
US 4,583,291 · App. 06/616,142
Electric chain saw speed reduction device
Inventor:
Edward J. Pilatowicz
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Jun 1, 1984
Inventor
Edward J. Pilatowicz
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.