Granted Patent
Utility
US 6,763,595 · App. 10/176,881
Laser-based tool for indicating level, plumb and square
Inventor:
William Hersey
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Jun 21, 2002
Inventor
William Hersey
Assignee (at issue)
PLS-Pacific Laser Systems, LLC
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.