Granted Patent
Utility
US 4,813,351 · App. 07/099,336
Multiple color screen printing and curing apparatus
Inventor:
John T. Pierson
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Sep 18, 1987
Inventor
John T. Pierson
Assignee (at issue)
Preco Industries, Inc.
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.