Granted Patent
Utility
US 5,230,159 · App. 07/928,504
Tape rule calculator
Inventor:
William S. Lipsey
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Aug 11, 1992
Inventor
William S. Lipsey
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.