Granted Patent
Utility
US 6,157,591 · App. 09/374,093
Sonic range finder with laser pointer
Inventor:
Norman L. Krantz
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Aug 12, 1999
Inventor
Norman L. Krantz
Assignee (at issue)
Zircon 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.