Granted Patent
Utility
US 5,290,385 · App. 07/857,277
Multiple set pressure sealer rollers
Inventors:
Richard S. Downing, Daniel F. Pustelnik
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Mar 25, 1992
Inventors
Richard S. Downing
Daniel F. Pustelnik
Assignee (at issue)
Moore Business Forms, 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.