Granted Patent
Utility
US 6,444,147 · App. 09/439,504
Apparatus for making molds for thermoforming a three-dimensional relief reproduction
Inventor:
Glenn T. Harding
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Nov 12, 1999
Inventor
Glenn T. Harding
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.