Granted Patent
Utility
US 4,982,639 · App. 07/456,582
Die cutting anvil system
Inventor:
Alan D. Kirkpatrick
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Dec 26, 1989
Inventor
Alan D. Kirkpatrick
Assignee (at issue)
ROBUD
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.