Granted Patent
Utility
US 5,329,381 · App. 07/839,403
Automatic engraving method and apparatus
Inventor:
John Payne
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Feb 20, 1992
Inventor
John Payne
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.