Granted Patent
Utility
US 5,779,236 · App. 08/711,947
Vacuum hold down conveyor system with reduced net downward force on a belt
Inventors:
Marvin H. Duncan, Jr., Dan Haferman
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Sep 6, 1996
Inventors
Marvin H. Duncan, Jr.
Dan Haferman
Assignee (at issue)
Cutting Edge Consulting Associates, 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.