Granted Patent
Utility
US 6,634,639 · App. 10/143,753
Paper sheet stacking apparatus
Inventors:
Hayato Kuroda, Yasunori Kikuzato
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: May 14, 2002
Inventors
Hayato Kuroda
Yasunori Kikuzato
Assignee (at issue)
NEC CORPORATION
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.