Granted Patent
Utility
US 5,433,146 · App. 08/037,719
Apparatus and method for marking pellet-shaped articles
Inventor:
E. Michael Ackley
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Mar 25, 1993
Inventor
E. Michael Ackley
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.