Granted Patent
Utility
US 4,892,022 · App. 07/246,614
Safety guard for sawing power tool particularly mitre saw
Inventors:
Lawrence M. Cotton, John Charles Derler
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Sep 20, 1988
Inventors
Lawrence M. Cotton
John Charles Derler
Assignee (at issue)
Robert Bosch Power Tool 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.