Granted Patent
Utility
US 5,143,131 · App. 07/782,432
Selectable spray pattern chain saw bar system
Inventors:
Christopher D. Seigneur, Robin A. Plumbley
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Oct 25, 1991
Inventors
Christopher D. Seigneur
Robin A. Plumbley
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.