Granted Patent
Utility
US 5,772,391 · App. 08/561,694
Stacker for counting and stacking signatures delivered by a gripper conveyor
Inventors:
Christer A. Sjogren, Medardo Espinosa
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Nov 22, 1995
Inventors
Christer A. Sjogren
Medardo Espinosa
Assignee (at issue)
Quipp 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.