Granted Patent
Utility
US 4,920,947 · App. 07/181,437
Chain saw components and system for cutting masonry and the like
Inventors:
Lewis A. Scott, Francis E. Hoffman, Kenneth R. Bolkan
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Apr 14, 1988
Inventors
Lewis A. Scott
Francis E. Hoffman
Kenneth R. Bolkan
Assignee (at issue)
Blount, 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.