Granted Patent
Utility
US 4,291,709 · App. 06/165,173
Infeed geometry
Inventors:
Steven J. Weber, E. William Rowland-Hill
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Jul 2, 1980
Inventors
Steven J. Weber
E. William Rowland-Hill
Assignee (at issue)
Sperry Corp.
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.