Granted Patent
Utility
US 6,423,932 · App. 09/785,867
Apparatus and method for high speed laser perforation of webs
Inventor:
William E. Lawson
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Feb 16, 2001
Inventor
William E. Lawson
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.