Granted Patent
Utility
US 6,442,856 · App. 09/544,628
Extendable tool for use marking angular lines
Inventor:
Robert Warner
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Apr 6, 2000
Inventor
Robert Warner
Assignees (at issue)
Genuity Group, LLC
VERIZON CORPORATE SERVICES GROUP 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.