Granted Patent
Utility
US 4,759,247 · App. 07/112,228
Rotary dies with adjustable cutter force
Inventors:
Jerry L. Bell, William C. Bollinger
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Oct 22, 1987
Inventors
Jerry L. Bell
William C. Bollinger
Assignee (at issue)
Bernal Rotary Systems, 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.